Write university like handwritten notes on urinary bladder for anatomy with clinical applied

Reading File

Finding Sources

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Finding Sources

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Finding Sources

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Running Command

ls /home/daytona/workspace/ 2>/dev/null || mkdir -p /home/daytona/workspace/

Running Command

mkdir -p /home/daytona/workspace/bladder-notes && ls /home/daytona/workspace/bla…

Writing File

~/bladder-notes/create_notes.js

const pptxgen = require("pptxgenjs");

const pres = new pptxgen();
pres.layout = 'LAYOUT_WIDE'; // 13.3" x 7.5"
pres.title = 'Urinary Bladder - Anatomy Notes';
pres.author = 'University Anatomy Notes';

// ─── Color Palette (Handwritten notebook feel) ───────────────────────────────
const BG       = "FFFDF4";   // warm cream paper
const INK      = "1A1A2E";   // deep navy ink
const HEADING  = "1B4F72";   // blue heading (like colored marker)
const RED      = "C0392B";   // red ink for important points
const GREEN    = "1E8449";   // green for clinical notes
const PURPLE   = "6C3483";   // purple for mnemonics
const ORANGE   = "D35400";   // orange for embryology
const LIGHT_BG = "EBF5FB";   // light blue boxes
const GREEN_BG = "EAFAF1";   // light green boxes
const RED_BG   = "FDEDEC";   // light red for clinical
const RULED    = "D6EAF8";   // ruled line color

// ─── Helper: ruled-line background  ─────────────────────────────────────────
function addRuledBg(slide) {
  slide.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: BG }, line: { color: BG } });
  // Horizontal rules
  for (let y = 0.9; y < 7.5; y += 0.34) {
    slide.addShape(pres.ShapeType.line, { x: 0.3, y, w: 12.7, h: 0, line: { color: RULED, width: 0.5, dashType: 'solid' } });
  }
  // Left red margin line
  slide.addShape(pres.ShapeType.line, { x: 1.1, y: 0.3, w: 0, h: 7.0, line: { color: "F1948A", width: 1.2 } });
}

function slideHeader(slide, title, subtitle) {
  slide.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 0.62, fill: { color: HEADING }, line: { color: HEADING } });
  slide.addText(title, { x: 0.15, y: 0.08, w: 9, h: 0.48, fontSize: 20, fontFace: 'Patrick Hand SC', bold: true, color: 'FFFFFF', margin: 0 });
  if (subtitle) {
    slide.addText(subtitle, { x: 9.2, y: 0.1, w: 3.9, h: 0.42, fontSize: 11, fontFace: 'Patrick Hand SC', color: 'D6EEF8', align: 'right', margin: 0 });
  }
}

function box(slide, x, y, w, h, fillColor, borderColor, text, textOptions) {
  slide.addShape(pres.ShapeType.roundRect, { x, y, w, h, fill: { color: fillColor }, line: { color: borderColor, width: 1 }, rectRadius: 0.07 });
  if (text) {
    slide.addText(text, { x: x + 0.08, y: y + 0.04, w: w - 0.16, h: h - 0.08, ...textOptions });
  }
}

// ─── SLIDE 1: Title ──────────────────────────────────────────────────────────
{
  const sl = pres.addSlide();
  sl.addShape(pres.ShapeType.rect, { x: 0, y: 0, w: 13.3, h: 7.5, fill: { color: "0D2137" }, line: { color: "0D2137" } });
  // decorative ruled lines
  for (let i = 0; i < 14; i++) {
    sl.addShape(pres.ShapeType.line, { x: 0, y: 0.5 + i * 0.52, w: 13.3, h: 0, line: { color: "1B3A55", width: 0.6 } });
  }
  sl.addShape(pres.ShapeType.rect, { x: 0.5, y: 0.9, w: 12.3, h: 5.7, fill: { color: "FFFDF4", transparency: 5 }, line: { color: "A9CCE3", width: 1.5 } });
  sl.addShape(pres.ShapeType.line, { x: 1.6, y: 0.9, w: 0, h: 5.7, line: { color: "F1948A", width: 1.5 } });
  sl.addText("URINARY BLADDER", { x: 2, y: 1.4, w: 10, h: 1.0, fontSize: 48, bold: true, color: INK, fontFace: 'Patrick Hand SC', align: 'center' });
  sl.addText("Anatomy with Clinical Applications", { x: 2, y: 2.55, w: 10, h: 0.55, fontSize: 22, color: HEADING, fontFace: 'Patrick Hand SC', align: 'center', italic: true });
  sl.addShape(pres.ShapeType.line, { x: 2.5, y: 3.2, w: 8.3, h: 0, line: { color: RED, width: 1.5 } });
  sl.addText([
    { text: "Topics: ", options: { bold: true, color: RED } },
    { text: "Position & Parts  •  Relations  •  Interior  •  Histology  •  Blood Supply\nInnervation  •  Lymphatics  •  Micturition  •  Embryology  •  Clinical Notes", options: { color: INK } }
  ], { x: 2, y: 3.4, w: 9.5, h: 1.3, fontSize: 14, fontFace: 'Patrick Hand SC', align: 'center' });
  sl.addText("✏  University Anatomy Notes   |   Date: _______________   |   Subject: Human Anatomy", {
    x: 0.6, y: 6.75, w: 12, h: 0.45, fontSize: 11, color: "7F8C8D", fontFace: 'Patrick Hand SC', align: 'center'
  });
}

// ─── SLIDE 2: Introduction & Position ────────────────────────────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "1. INTRODUCTION & POSITION", "Urinary Bladder | Anatomy");

  // Left column
  sl.addText("Definition & Basic Facts", { x: 1.2, y: 0.75, w: 5.5, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });
  sl.addText([
    { text: "• ", options: { color: RED, bold: true } }, { text: "Hollow, muscular, distensible reservoir for urine\n", options: { color: INK } },
    { text: "• ", options: { color: RED, bold: true } }, { text: "Located in the lesser pelvis, posterior to pubic symphysis\n", options: { color: INK } },
    { text: "• ", options: { color: RED, bold: true } }, { text: "Capacity: ~", options: { color: INK } }, { text: "500 mL", options: { color: RED, bold: true } }, { text: " (urge to void at ~300 mL)\n", options: { color: INK } },
    { text: "• ", options: { color: RED, bold: true } }, { text: "Shape varies: EMPTY = pyramidal; FULL = ovoid\n", options: { color: INK } },
    { text: "• ", options: { color: RED, bold: true } }, { text: "When full, apex rises above pubic symphysis into abdomen\n", options: { color: INK } },
  ], { x: 1.2, y: 1.12, w: 5.6, h: 1.8, fontSize: 12, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.3 });

  sl.addText("Parts of Urinary Bladder", { x: 1.2, y: 3.0, w: 5.5, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });

  const parts = [
    { label: "APEX", desc: "Anterosuperior; attached to median umbilical ligament (obliterated urachus) → umbilicus", col: ORANGE },
    { label: "BODY", desc: "Main bulk of organ; bounded by superior + 2 inferolateral surfaces", col: HEADING },
    { label: "FUNDUS (Base)", desc: "Posterior; receives 2 ureters; related to seminal vesicles (M) / uterus/vagina (F)", col: PURPLE },
    { label: "NECK", desc: "Inferiormost; continuous with urethra; most fixed part; rests on prostate (M) / UG diaphragm (F)", col: RED },
  ];

  parts.forEach((p, i) => {
    box(sl, 1.2, 3.45 + i * 0.82, 5.6, 0.74, i % 2 === 0 ? LIGHT_BG : "FEF9E7", p.col, null, {});
    sl.addText(p.label, { x: 1.3, y: 3.5 + i * 0.82, w: 1.5, h: 0.64, fontSize: 11, bold: true, color: p.col, fontFace: 'Patrick Hand SC', valign: 'middle' });
    sl.addText(p.desc, { x: 2.85, y: 3.5 + i * 0.82, w: 4.0, h: 0.64, fontSize: 10.5, color: INK, fontFace: 'Patrick Hand SC', valign: 'middle', wrap: true });
  });

  // Right column: Gender differences box
  sl.addText("Position by Gender & Age", { x: 7.3, y: 0.75, w: 5.6, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });

  box(sl, 7.3, 1.12, 5.6, 1.4, LIGHT_BG, HEADING, null, {});
  sl.addText("MALE RELATIONS (posterior)", { x: 7.4, y: 1.18, w: 5.4, h: 0.28, fontSize: 11, bold: true, color: HEADING, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "• Seminal vesicles, vas deferens (posterolateral)\n", options: { color: INK } },
    { text: "• Rectum (posterior, separated by rectovesical pouch)\n", options: { color: INK } },
    { text: "• Prostate gland (inferior to bladder neck)\n", options: { color: INK } },
  ], { x: 7.5, y: 1.5, w: 5.2, h: 1.0, fontSize: 11, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.2 });

  box(sl, 7.3, 2.6, 5.6, 1.3, GREEN_BG, GREEN, null, {});
  sl.addText("FEMALE RELATIONS (posterior)", { x: 7.4, y: 2.66, w: 5.4, h: 0.28, fontSize: 11, bold: true, color: GREEN, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "• Uterus (body) separated by vesicouterine pouch\n", options: { color: INK } },
    { text: "• Anterior vaginal wall (base of bladder sits on it)\n", options: { color: INK } },
    { text: "• Bladder neck: rests on perineal membrane / UG diaphragm\n", options: { color: INK } },
  ], { x: 7.5, y: 2.96, w: 5.2, h: 0.9, fontSize: 11, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.2 });

  box(sl, 7.3, 3.98, 5.6, 0.75, RED_BG, RED, null, {});
  sl.addText("CHILDREN", { x: 7.4, y: 4.02, w: 5.4, h: 0.25, fontSize: 11, bold: true, color: RED, fontFace: 'Patrick Hand SC' });
  sl.addText("Bladder is an abdominal organ even when empty (descends to pelvis after puberty ~6 yrs)", { x: 7.5, y: 4.3, w: 5.2, h: 0.4, fontSize: 10.5, color: INK, fontFace: 'Patrick Hand SC', wrap: true });

  sl.addText("PERITONEAL RELATIONS:", { x: 7.3, y: 4.82, w: 5.6, h: 0.3, fontSize: 13, bold: true, color: HEADING, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "✦ Superior surface → COVERED by peritoneum\n", options: { color: HEADING } },
    { text: "✦ Anterior & lateral walls → NO peritoneum (retropubic space of Retzius)\n", options: { color: INK } },
    { text: "✦ As bladder fills → peritoneum peels off anterior wall → safe suprapubic access\n", options: { color: GREEN, bold: true } },
  ], { x: 7.3, y: 5.15, w: 5.6, h: 1.1, fontSize: 11, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.3 });

  sl.addText("★ MOST FIXED PART = BLADDER NECK (prostate/UG diaphragm)", {
    x: 1.2, y: 7.1, w: 11.5, h: 0.3, fontSize: 11, bold: true, color: RED, fontFace: 'Patrick Hand SC', align: 'center'
  });
}

// ─── SLIDE 3: Interior & Histology ───────────────────────────────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "2. INTERIOR OF BLADDER & HISTOLOGY", "Urinary Bladder | Anatomy");

  // Left: Interior
  sl.addText("Interior of Bladder", { x: 1.2, y: 0.75, w: 5.5, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });

  sl.addText([
    { text: "Mucosa (empty): ", options: { bold: true, color: HEADING } }, { text: "thrown into irregular RUGAE / FOLDS → disappear when distended\n", options: { color: INK } },
    { text: "Mucosa (trigone): ", options: { bold: true, color: ORANGE } }, { text: "SMOOTH, no folds → firmly adherent to detrusor\n", options: { color: INK } },
  ], { x: 1.2, y: 1.15, w: 5.6, h: 0.85, fontSize: 12, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.35 });

  // Trigone box
  box(sl, 1.2, 2.08, 5.6, 2.5, "FEF9E7", ORANGE, null, {});
  sl.addText("TRIGONE OF BLADDER", { x: 1.35, y: 2.14, w: 5.3, h: 0.35, fontSize: 13, bold: true, color: ORANGE, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "Triangular smooth area on the FLOOR / POSTERIOR WALL\n\n", options: { color: INK, bold: true } },
    { text: "Boundaries:\n", options: { bold: true, color: ORANGE } },
    { text: "  • Superolateral angles (×2) = ", options: { color: INK } }, { text: "Ureteric orifices\n", options: { bold: true, color: HEADING } },
    { text: "  • Inferior angle = ", options: { color: INK } }, { text: "Internal urethral orifice\n\n", options: { bold: true, color: HEADING } },
    { text: "Interureteric ridge (Mercier's bar) = ", options: { bold: true, color: PURPLE } }, { text: "transverse fold connecting ureteric orifices\n\n", options: { color: INK } },
    { text: "Uvula vesicae = ", options: { bold: true, color: RED } }, { text: "small elevation at internal urethral orifice in MALES (due to median lobe of prostate)\n\n", options: { color: INK } },
    { text: "Embryology: Trigone derived from MESONEPHRIC DUCT (mesoderm)\n", options: { color: ORANGE, italic: true } },
    { text: "  → NO muscularis mucosae or submucosal layer!\n", options: { color: ORANGE, italic: true } },
    { text: "Rest of bladder derived from CLOACA (endoderm)\n", options: { color: ORANGE, italic: true } },
  ], { x: 1.35, y: 2.52, w: 5.3, h: 2.0, fontSize: 10.5, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.2 });

  sl.addText("Ureteric orifices open OBLIQUELY (antireflux mechanism!)", { x: 1.2, y: 4.65, w: 5.6, h: 0.3, fontSize: 11, bold: true, color: GREEN, fontFace: 'Patrick Hand SC' });

  // Right: Histology layers
  sl.addText("Histology / Layers of Bladder Wall", { x: 7.1, y: 0.75, w: 5.8, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });

  const layers = [
    { num: "1", name: "UROTHELIUM (Transitional Epithelium)", detail: "Lines entire interior; stratified; 4-6 cell layers when empty, 2-3 when distended. Barrier function against urine. Umbrella cells at surface.", col: HEADING, bg: LIGHT_BG },
    { num: "2", name: "LAMINA PROPRIA", detail: "Loose vascular connective tissue; contains muscularis mucosae (thin, variable). ABSENT in trigone.", col: PURPLE, bg: "F9F0FF" },
    { num: "3", name: "DETRUSOR MUSCLE", detail: "Three ill-defined smooth muscle layers: inner longitudinal, middle circular, outer longitudinal. At internal urethral orifice → forms INTERNAL SPHINCTER (involuntary).\n• Sympathetic (β₃): RELAXES detrusor\n• Parasympathetic (M3): CONTRACTS detrusor", col: GREEN, bg: GREEN_BG },
    { num: "4", name: "ADVENTITIA / SEROSA", detail: "Fibrofattite adventitia on most surfaces. PERITONEUM (serosa) only on superior surface & part of posterior surface above trigone.", col: ORANGE, bg: "FEF9E7" },
  ];

  layers.forEach((l, i) => {
    box(sl, 7.1, 1.15 + i * 1.52, 5.8, 1.42, l.bg, l.col, null, {});
    sl.addText(l.num, { x: 7.18, y: 1.2 + i * 1.52, w: 0.38, h: 1.3, fontSize: 18, bold: true, color: l.col, fontFace: 'Patrick Hand SC', valign: 'middle', align: 'center' });
    sl.addText(l.name, { x: 7.6, y: 1.22 + i * 1.52, w: 5.2, h: 0.32, fontSize: 11.5, bold: true, color: l.col, fontFace: 'Patrick Hand SC' });
    sl.addText(l.detail, { x: 7.6, y: 1.56 + i * 1.52, w: 5.2, h: 1.0, fontSize: 10, color: INK, fontFace: 'Patrick Hand SC', wrap: true, lineSpacingMultiple: 1.15 });
  });

  // Footer note
  sl.addText("★ Trigone = smooth & adherent (no rugae) → First site of tumor implantation / schistosomiasis calcification", {
    x: 1.2, y: 7.05, w: 11.5, h: 0.35, fontSize: 10.5, bold: true, color: RED, fontFace: 'Patrick Hand SC', align: 'center'
  });
}

// ─── SLIDE 4: Blood Supply & Lymphatics ──────────────────────────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "3. BLOOD SUPPLY & LYMPHATIC DRAINAGE", "Urinary Bladder | Anatomy");

  // Arterial supply
  sl.addText("Arterial Supply", { x: 1.2, y: 0.75, w: 5.5, h: 0.35, fontSize: 14, bold: true, color: RED, fontFace: 'Patrick Hand SC', underline: true });

  const arteries = [
    { vessel: "Superior Vesical Artery (×2)", src: "Branch of umbilical artery → from internal iliac artery", supply: "Superior, anterior & lateral surfaces of bladder + upper ureter", col: RED },
    { vessel: "Inferior Vesical Artery (×2)", src: "Direct branch of anterior trunk of internal iliac artery (male)\nVaginal artery equivalent (female)", supply: "Base (fundus), neck of bladder, seminal vesicles, prostate (M) / upper vagina (F)", col: PURPLE },
    { vessel: "Middle Rectal Artery", src: "Branch of internal iliac", supply: "Minor contribution to bladder base", col: ORANGE },
    { vessel: "Obturator & Inferior Gluteal", src: "Internal iliac branches", supply: "Small accessory twigs to bladder", col: "7D6608" },
  ];

  arteries.forEach((a, i) => {
    box(sl, 1.2, 1.15 + i * 1.1, 5.7, 1.02, i % 2 === 0 ? RED_BG : "FDF2F8", a.col, null, {});
    sl.addText(a.vessel, { x: 1.3, y: 1.18 + i * 1.1, w: 5.5, h: 0.3, fontSize: 11.5, bold: true, color: a.col, fontFace: 'Patrick Hand SC' });
    sl.addText("Source: " + a.src, { x: 1.3, y: 1.5 + i * 1.1, w: 5.5, h: 0.3, fontSize: 10, color: HEADING, fontFace: 'Patrick Hand SC', wrap: true });
    sl.addText("Supply: " + a.supply, { x: 1.3, y: 1.72 + i * 1.1, w: 5.5, h: 0.36, fontSize: 10, color: INK, fontFace: 'Patrick Hand SC', wrap: true });
  });

  sl.addText("All arterial supply from INTERNAL ILIAC ARTERY (anterior trunk)", {
    x: 1.2, y: 5.6, w: 5.7, h: 0.3, fontSize: 11, bold: true, color: RED, fontFace: 'Patrick Hand SC', align: 'center'
  });
  sl.addText("Rich collateral network → ligation of single artery is NOT detrimental", {
    x: 1.2, y: 5.9, w: 5.7, h: 0.3, fontSize: 10.5, color: GREEN, fontFace: 'Patrick Hand SC', align: 'center', italic: true
  });

  // Right: Venous & Lymphatics
  sl.addText("Venous Drainage", { x: 7.2, y: 0.75, w: 5.8, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });
  box(sl, 7.2, 1.12, 5.8, 1.4, LIGHT_BG, HEADING, null, {});
  sl.addText([
    { text: "Vesical venous plexus ", options: { bold: true, color: HEADING } }, { text: "→ surrounds fundus & base\n", options: { color: INK } },
    { text: "→ Drains into ", options: { color: INK } }, { text: "Internal Iliac Veins\n", options: { bold: true, color: RED } },
    { text: "Communicates with: Prostatic venous plexus (M) | Vaginal venous plexus (F)\n", options: { color: INK } },
    { text: "Also communicates with vertebral (Batson's) plexus → metastasis pathway!", options: { bold: true, color: RED } },
  ], { x: 7.3, y: 1.2, w: 5.6, h: 1.28, fontSize: 10.5, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.3 });

  sl.addText("Lymphatic Drainage", { x: 7.2, y: 2.62, w: 5.8, h: 0.35, fontSize: 14, bold: true, color: GREEN, fontFace: 'Patrick Hand SC', underline: true });

  const lymph = [
    { from: "Superior & lateral wall", to: "External iliac nodes", col: GREEN },
    { from: "Fundus & Trigone (base)", to: "Internal iliac nodes", col: HEADING },
    { from: "Anterior wall", to: "Internal iliac nodes (via obturator/iliac)", col: PURPLE },
    { from: "All nodes → ultimately", to: "Para-aortic nodes (lateral aortic)", col: ORANGE },
  ];

  box(sl, 7.2, 3.05, 5.8, 2.15, GREEN_BG, GREEN, null, {});
  sl.addText("Region → Lymph Node", { x: 7.3, y: 3.1, w: 5.6, h: 0.28, fontSize: 11, bold: true, color: GREEN, fontFace: 'Patrick Hand SC' });
  sl.addShape(pres.ShapeType.line, { x: 7.3, y: 3.4, w: 5.6, h: 0, line: { color: GREEN, width: 0.5 } });

  lymph.forEach((l, i) => {
    sl.addText(`${l.from}  →  `, { x: 7.35, y: 3.46 + i * 0.43, w: 3.1, h: 0.38, fontSize: 10.5, color: INK, fontFace: 'Patrick Hand SC', valign: 'middle' });
    sl.addText(l.to, { x: 10.45, y: 3.46 + i * 0.43, w: 2.4, h: 0.38, fontSize: 10.5, bold: true, color: l.col, fontFace: 'Patrick Hand SC', valign: 'middle' });
  });

  // Clinical note: vesical fistula
  box(sl, 7.2, 5.3, 5.8, 1.15, RED_BG, RED, null, {});
  sl.addText("⚕ CLINICAL: Lymphatic spread of bladder carcinoma", { x: 7.3, y: 5.36, w: 5.6, h: 0.3, fontSize: 11, bold: true, color: RED, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "Bladder TCC spreads to → External iliac → Common iliac → Para-aortic\n", options: { color: INK } },
    { text: "Trigone tumors → directly to internal iliac & obturator nodes\n", options: { color: INK } },
    { text: "Check obturator nodes in radical cystectomy!", options: { bold: true, color: RED } },
  ], { x: 7.3, y: 5.68, w: 5.6, h: 0.73, fontSize: 10, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.2 });

  sl.addText("MNEMONIC - Arterial supply: 'SLIM' = Superior Vesical, (inferior) Linings vesical, Internal iliac Main trunk", {
    x: 1.2, y: 6.95, w: 11.5, h: 0.35, fontSize: 10.5, color: PURPLE, fontFace: 'Patrick Hand SC', italic: true, align: 'center'
  });
}

// ─── SLIDE 5: Nerve Supply ────────────────────────────────────────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "4. NERVE SUPPLY & SPHINCTERS", "Urinary Bladder | Anatomy");

  // Left column: nerve table
  sl.addText("Innervation of Urinary Bladder", { x: 1.2, y: 0.75, w: 5.7, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });

  const nerves = [
    {
      type: "PARASYMPATHETIC",
      level: "S2, S3, S4 (Pelvic splanchnic nerves)",
      path: "Via inferior hypogastric / pelvic plexus → postganglionic in bladder wall",
      effects: [
        "Contracts DETRUSOR (via M3 muscarinic receptors)",
        "Relaxes INTERNAL SPHINCTER (via NO release)",
        "→ MICTURITION (S2-S4 keeps the urine off the floor!)"
      ],
      bg: LIGHT_BG, col: HEADING
    },
    {
      type: "SYMPATHETIC",
      level: "T11–L2 (Hypogastric nerve / inf. mesenteric plexus)",
      path: "Via superior & inferior hypogastric plexus → vesical plexus",
      effects: [
        "β₃ receptors: RELAXES detrusor (bladder filling)",
        "α₁ receptors: CONTRACTS internal urethral sphincter",
        "→ STORAGE (bladder fills, urine retained)"
      ],
      bg: "FEF9E7", col: ORANGE
    },
    {
      type: "SOMATIC (Pudendal Nerve)",
      level: "S2, S3, S4",
      path: "Via pudendal nerve → perineal nerve → external sphincter",
      effects: [
        "Maintains TONIC CONTRACTION of external (rhabdosphincter)",
        "Voluntary control over micturition",
        "Nicotinic ACh receptors → skeletal muscle contraction"
      ],
      bg: GREEN_BG, col: GREEN
    },
    {
      type: "AFFERENT (Sensory)",
      level: "Travel with both para & sympathetic",
      path: "Stretch receptors in detrusor → sense fullness. Pain fibers via sympathetics (T11-L2)",
      effects: [
        "Urgency & pain travel in SYMPATHETIC fibers",
        "Stretch/fullness sensation in PARASYMPATHETIC (S2-4)",
        "Pain referred to hypogastrium, perineum, inner thigh"
      ],
      bg: "FDF2F8", col: PURPLE
    },
  ];

  nerves.forEach((n, i) => {
    box(sl, 1.2, 1.12 + i * 1.55, 5.7, 1.47, n.bg, n.col, null, {});
    sl.addText(n.type, { x: 1.3, y: 1.17 + i * 1.55, w: 5.5, h: 0.3, fontSize: 11.5, bold: true, color: n.col, fontFace: 'Patrick Hand SC' });
    sl.addText("Level: " + n.level, { x: 1.3, y: 1.48 + i * 1.55, w: 5.5, h: 0.25, fontSize: 9.5, color: HEADING, fontFace: 'Patrick Hand SC', italic: true });
    sl.addText(n.effects.map(e => "→ " + e).join("\n"), { x: 1.3, y: 1.74 + i * 1.55, w: 5.5, h: 0.82, fontSize: 9.5, color: INK, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.15, wrap: true });
  });

  // Right: Sphincters + micturition
  sl.addText("Sphincters of Bladder", { x: 7.2, y: 0.75, w: 5.8, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });

  const sphincters = [
    {
      name: "INTERNAL URETHRAL SPHINCTER",
      type: "SMOOTH muscle (involuntary)",
      location: "At bladder neck / junction with urethra",
      nerve: "Sympathetic (α₁) → contracts; Parasympathetic (NO) → relaxes",
      bg: LIGHT_BG, col: HEADING
    },
    {
      name: "EXTERNAL URETHRAL SPHINCTER",
      type: "SKELETAL (striated) muscle (voluntary)",
      location: "Surrounds membranous urethra; within deep perineal pouch",
      nerve: "Somatic - Pudendal nerve (S2-4) → tonic contraction maintained",
      bg: GREEN_BG, col: GREEN
    },
  ];

  sphincters.forEach((s, i) => {
    box(sl, 7.2, 1.12 + i * 1.7, 5.8, 1.6, s.bg, s.col, null, {});
    sl.addText(s.name, { x: 7.3, y: 1.17 + i * 1.7, w: 5.6, h: 0.32, fontSize: 12, bold: true, color: s.col, fontFace: 'Patrick Hand SC' });
    sl.addText([
      { text: "Type: ", options: { bold: true, color: s.col } }, { text: s.type + "\n", options: { color: INK } },
      { text: "Location: ", options: { bold: true, color: s.col } }, { text: s.location + "\n", options: { color: INK } },
      { text: "Nerve: ", options: { bold: true, color: s.col } }, { text: s.nerve, options: { color: INK } },
    ], { x: 7.3, y: 1.52 + i * 1.7, w: 5.6, h: 1.1, fontSize: 10, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.25 });
  });

  box(sl, 7.2, 4.6, 5.8, 2.2, "FEF9E7", ORANGE, null, {});
  sl.addText("MICTURITION REFLEX (Summary)", { x: 7.3, y: 4.66, w: 5.6, h: 0.3, fontSize: 12, bold: true, color: ORANGE, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "FILLING phase (SYMPATHETIC dominates):\n", options: { bold: true, color: ORANGE } },
    { text: "  β₃ → detrusor relaxes; α₁ → internal sphincter CONTRACTS\n  Pudendal → external sphincter CONTRACTS\n\n", options: { color: INK } },
    { text: "VOIDING phase (PARASYMPATHETIC dominates):\n", options: { bold: true, color: HEADING } },
    { text: "  Stretch receptors → afferents → S2-4 → efferents → ACh\n", options: { color: INK } },
    { text: "  Detrusor CONTRACTS + both sphincters RELAX\n\n", options: { color: INK } },
    { text: "VOLUNTARY CONTROL: Cortex inhibits → pudendal maintains contraction\n", options: { color: GREEN, bold: true } },
    { text: "Higher center (pons micturition center / Barrington's nucleus) coordinates\n", options: { color: INK } },
  ], { x: 7.3, y: 4.99, w: 5.6, h: 1.75, fontSize: 9.5, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.15 });

  sl.addText("★ DETRUSOR = Pelvic nerve (S2-4) | SPHINCTER = Pudendal (S2-4) | STORAGE = Hypogastric (L1-2)", {
    x: 1.2, y: 7.0, w: 11.5, h: 0.35, fontSize: 10.5, bold: true, color: PURPLE, fontFace: 'Patrick Hand SC', align: 'center'
  });
}

// ─── SLIDE 6: Embryology ─────────────────────────────────────────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "5. EMBRYOLOGY OF URINARY BLADDER", "Urinary Bladder | Anatomy");

  sl.addText("Development Overview", { x: 1.2, y: 0.75, w: 6, h: 0.35, fontSize: 14, bold: true, color: ORANGE, fontFace: 'Patrick Hand SC', underline: true });

  // Timeline boxes
  const stages = [
    { week: "Week 4", event: "Cloaca forms (expanded hindgut terminal part)", detail: "Receives allantois anteriorly, hindgut posteriorly, and mesonephric ducts laterally" },
    { week: "Week 4-7", event: "Urorectal septum divides cloaca", detail: "→ Urogenital sinus (anterior) + Rectum (posterior)" },
    { week: "Week 5-7", event: "3 parts of urogenital sinus form", detail: "VESICAL part → bladder body\nPELVIC part → urethra neck\nPHALLIC part → grows toward genital tubercle" },
    { week: "Week 7-12", event: "Allantois obliterates → URACHUS", detail: "Urachus = fibrous cord from apex of bladder to umbilicus → Adult = MEDIAN UMBILICAL LIGAMENT" },
    { week: "Week 8-12", event: "Mesonephric ducts absorbed into bladder wall", detail: "Contribute connective tissue to TRIGONE\nUreters gain separate openings into bladder\nTrigone mucosa → MESODERMAL origin" },
  ];

  stages.forEach((s, i) => {
    box(sl, 1.2, 1.15 + i * 1.2, 6.0, 1.1, i % 2 === 0 ? "FFF8EC" : LIGHT_BG, ORANGE, null, {});
    sl.addShape(pres.ShapeType.rect, { x: 1.2, y: 1.15 + i * 1.2, w: 1.05, h: 1.1, fill: { color: ORANGE }, line: { color: ORANGE } });
    sl.addText(s.week, { x: 1.22, y: 1.2 + i * 1.2, w: 1.0, h: 1.0, fontSize: 10, bold: true, color: "FFFFFF", fontFace: 'Patrick Hand SC', align: 'center', valign: 'middle' });
    sl.addText(s.event, { x: 2.3, y: 1.18 + i * 1.2, w: 4.8, h: 0.3, fontSize: 11, bold: true, color: ORANGE, fontFace: 'Patrick Hand SC' });
    sl.addText(s.detail, { x: 2.3, y: 1.5 + i * 1.2, w: 4.8, h: 0.7, fontSize: 10, color: INK, fontFace: 'Patrick Hand SC', wrap: true, lineSpacingMultiple: 1.15 });
  });

  // Right column
  sl.addText("Urachal Remnants & Anomalies", { x: 7.5, y: 0.75, w: 5.5, h: 0.35, fontSize: 14, bold: true, color: RED, fontFace: 'Patrick Hand SC', underline: true });

  const urachus = [
    { name: "Patent Urachus", desc: "Urachus remains open → Urine drains from umbilicus", color: RED },
    { name: "Urachal Cyst", desc: "Obliterated at both ends but patent in middle → cyst forms; can become infected", color: PURPLE },
    { name: "Urachal Sinus", desc: "Open at umbilical end only → drains at umbilicus", color: ORANGE },
    { name: "Vesicourachal Diverticulum", desc: "Open at bladder end only → diverticulum at apex of bladder", color: HEADING },
    { name: "Urachal Adenocarcinoma", desc: "Rare (~1% of bladder tumors); located at dome/apex; often mucin-secreting adenocarcinoma", color: RED },
  ];

  urachus.forEach((u, i) => {
    box(sl, 7.5, 1.12 + i * 1.2, 5.5, 1.1, i % 2 === 0 ? RED_BG : "FEF9E7", u.color, null, {});
    sl.addText(u.name, { x: 7.62, y: 1.16 + i * 1.2, w: 5.3, h: 0.3, fontSize: 11, bold: true, color: u.color, fontFace: 'Patrick Hand SC' });
    sl.addText(u.desc, { x: 7.62, y: 1.48 + i * 1.2, w: 5.3, h: 0.7, fontSize: 10, color: INK, fontFace: 'Patrick Hand SC', wrap: true, lineSpacingMultiple: 1.15 });
  });

  sl.addText("Epithelium origin: Bladder body (endoderm of cloaca) | Trigone (mesoderm of mesonephric duct)", {
    x: 1.2, y: 7.05, w: 11.5, h: 0.35, fontSize: 10.5, bold: true, color: ORANGE, fontFace: 'Patrick Hand SC', align: 'center'
  });
}

// ─── SLIDE 7: Clinical Applied Anatomy ───────────────────────────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "6. CLINICAL APPLIED ANATOMY", "Urinary Bladder | HIGH YIELD");

  const clinicals = [
    {
      title: "1. Suprapubic Cystostomy",
      content: "Distended bladder rises above pubic symphysis → peritoneum peels off anterior wall. Needle/trocar inserted just above pubic symphysis avoids peritoneum → extraperitoneal access to bladder. Used in: urethral trauma, BPH, post-op retention.",
      col: HEADING, bg: LIGHT_BG
    },
    {
      title: "2. Vesicoureteric Reflux (VUR)",
      content: "Ureters enter bladder OBLIQUELY through detrusor (2-3 cm intramural course). Detrusor tone compresses ureter → antireflux valve. If obliquity lost (short intramural segment) → urine refluxes to kidney → recurrent UTI, hydronephrosis, scarring.",
      col: GREEN, bg: GREEN_BG
    },
    {
      title: "3. Neurogenic Bladder",
      content: "Upper Motor Neuron lesion (above S2-4): Spastic/reflex bladder → detrusor overactivity, small capacity, incontinence.\nLower Motor Neuron lesion (S2-4 / conus medullaris): Flaccid/autonomous bladder → urinary retention, overflow incontinence, large residual volume.",
      col: PURPLE, bg: "F9F0FF"
    },
    {
      title: "4. Bladder Injuries",
      content: "Intraperitoneal rupture (dome): Blunt abdominal trauma with full bladder → urine into peritoneum → peritonitis. Extraperitoneal rupture: Pelvic fracture lacerates anterolateral wall → urine in retropubic/pelvic fat. Iatrogenic: Midline incision extended to pubis may injure full bladder.",
      col: RED, bg: RED_BG
    },
    {
      title: "5. Bladder Carcinoma",
      content: "Most common: Transitional Cell Ca (TCC/Urothelial Ca). Presents with painless hematuria. Trigone is common site. Spreads → external iliac, internal iliac nodes. Schistosomiasis → squamous cell Ca (S. haematobium; calcification on X-ray). Risk: smoking, aniline dyes, cyclophosphamide (hemorrhagic cystitis → Ca).",
      col: "922B21", bg: "#FDEDEC"
    },
    {
      title: "6. Cystitis & Trigone",
      content: "Cystitis (UTI) → inflammation → trigone involvement → frequency, dysuria, urgency. Trigone is most sensitive area. Female > Male (short urethra 3-4 cm vs male 20 cm). Interstitial cystitis: chronic, sterile inflammation → Hunner's ulcers on trigone/posterior wall.",
      col: ORANGE, bg: "FFF8EC"
    },
  ];

  clinicals.forEach((c, i) => {
    const col = i < 3 ? 0 : 1;
    const row = i % 3;
    const x = col === 0 ? 1.2 : 7.2;
    const y = 0.78 + row * 2.12;
    box(sl, x, y, 5.7, 2.04, c.bg, c.col, null, {});
    sl.addText(c.title, { x: x + 0.1, y: y + 0.06, w: 5.5, h: 0.32, fontSize: 11.5, bold: true, color: c.col, fontFace: 'Patrick Hand SC' });
    sl.addShape(pres.ShapeType.line, { x: x + 0.1, y: y + 0.4, w: 5.5, h: 0, line: { color: c.col, width: 0.5 } });
    sl.addText(c.content, { x: x + 0.1, y: y + 0.44, w: 5.5, h: 1.55, fontSize: 9.5, color: INK, fontFace: 'Patrick Hand SC', wrap: true, lineSpacingMultiple: 1.18 });
  });

  sl.addText("⚕  See also: BPH (prostate compresses bladder neck), Pelvic floor disorders (female), Detrusor overactivity", {
    x: 1.2, y: 7.08, w: 11.5, h: 0.3, fontSize: 10, color: "7F8C8D", fontFace: 'Patrick Hand SC', align: 'center'
  });
}

// ─── SLIDE 8: More Clinical - Fistulae, TURBT, Cystoscopy ─────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "7. MORE CLINICAL CORRELATES", "Urinary Bladder | Applied Anatomy");

  // Left: vesical fistulae
  sl.addText("Vesical Fistulae", { x: 1.2, y: 0.75, w: 5.7, h: 0.35, fontSize: 14, bold: true, color: RED, fontFace: 'Patrick Hand SC', underline: true });

  const fistulae = [
    { name: "Vesicovaginal Fistula", cause: "Obstetric trauma, gynecological surgery, cervical Ca, radiotherapy", feature: "Continuous urinary incontinence per vagina; commonest pelvic fistula in developing countries" },
    { name: "Vesicointestinal (Colovesical)", cause: "Diverticular disease, Crohn's, colorectal Ca, pelvic surgery", feature: "Pneumaturia (gas in urine) + fecaluria → PATHOGNOMONIC. Recurrent UTI with mixed organisms" },
    { name: "Vesicouterine", cause: "LSCS complications (lower segment), uterine rupture", feature: "Cyclical hematuria (Youssef's syndrome) + amenorrhea + urinary incontinence" },
    { name: "Urethrovaginal", cause: "Obstetric trauma / anterior colporrhaphy", feature: "Incontinence position-dependent; leakage into vagina" },
  ];

  fistulae.forEach((f, i) => {
    box(sl, 1.2, 1.15 + i * 1.5, 5.7, 1.4, i % 2 === 0 ? RED_BG : "FDF2F8", RED, null, {});
    sl.addText(f.name, { x: 1.3, y: 1.19 + i * 1.5, w: 5.5, h: 0.3, fontSize: 11, bold: true, color: RED, fontFace: 'Patrick Hand SC' });
    sl.addText("Cause: " + f.cause, { x: 1.3, y: 1.51 + i * 1.5, w: 5.5, h: 0.28, fontSize: 9.5, color: HEADING, fontFace: 'Patrick Hand SC', wrap: true });
    sl.addText("Feature: " + f.feature, { x: 1.3, y: 1.8 + i * 1.5, w: 5.5, h: 0.3, fontSize: 9.5, color: INK, fontFace: 'Patrick Hand SC', wrap: true });
  });

  // Right column
  sl.addText("Cystoscopy & Surgical Notes", { x: 7.2, y: 0.75, w: 5.8, h: 0.35, fontSize: 14, bold: true, color: HEADING, fontFace: 'Patrick Hand SC', underline: true });

  box(sl, 7.2, 1.12, 5.8, 1.6, LIGHT_BG, HEADING, null, {});
  sl.addText("Cystoscopy Landmarks", { x: 7.3, y: 1.18, w: 5.6, h: 0.3, fontSize: 11.5, bold: true, color: HEADING, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "• Trigone: Smooth, pale → most common tumor site; easy to see\n", options: { color: INK } },
    { text: "• Ureteric orifices: Slit-like openings; efflux of urine visible\n", options: { color: INK } },
    { text: "• Interureteric ridge (bar): Visible as transverse fold\n", options: { color: INK } },
    { text: "• Uvula vesicae (male): Elevation above internal meatus\n", options: { color: INK } },
    { text: "• Bladder dome: Rugae present (redundant mucosa)\n", options: { color: INK } },
  ], { x: 7.3, y: 1.5, w: 5.6, h: 1.16, fontSize: 10, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.2 });

  box(sl, 7.2, 2.8, 5.8, 1.55, GREEN_BG, GREEN, null, {});
  sl.addText("TURBT & Radical Cystectomy", { x: 7.3, y: 2.86, w: 5.6, h: 0.3, fontSize: 11.5, bold: true, color: GREEN, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "TURBT (Trans-Urethral Resection of Bladder Tumor):\n", options: { bold: true, color: GREEN } },
    { text: "  • Peritoneal perforation risk → dome is extraperitoneal (ant) but superior dome = peritoneum\n  • Risk of obturator nerve stimulation → adductor spasm (obturator reflex) during lateral wall resection\n\n", options: { color: INK } },
    { text: "Radical Cystectomy: ", options: { bold: true, color: GREEN } }, { text: "Incision in retropubic space (of Retzius); identify median umbilical ligament (obliterated urachus) as guide to dome", options: { color: INK } },
  ], { x: 7.3, y: 3.18, w: 5.6, h: 1.12, fontSize: 9.5, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.18 });

  box(sl, 7.2, 4.43, 5.8, 1.55, "FEF9E7", ORANGE, null, {});
  sl.addText("Space of Retzius (Retropubic Space)", { x: 7.3, y: 4.49, w: 5.6, h: 0.3, fontSize: 11.5, bold: true, color: ORANGE, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "Extraperitoneal potential space between pubis/rectus & bladder\n", options: { color: INK } },
    { text: "Contents: loose areolar tissue, fat, vesical venous plexus\n", options: { color: INK } },
    { text: "Clinical: Catheterization, suprapubic cystostomy, radical prostatectomy, bladder surgery all use this space\n", options: { color: INK } },
    { text: "Retropubic hematoma after pelvic fracture fills this space!", options: { bold: true, color: RED } },
  ], { x: 7.3, y: 4.82, w: 5.6, h: 1.1, fontSize: 9.5, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.18 });

  box(sl, 7.2, 6.05, 5.8, 1.2, RED_BG, RED, null, {});
  sl.addText("Overflow / Stress Incontinence", { x: 7.3, y: 6.11, w: 5.6, h: 0.28, fontSize: 11, bold: true, color: RED, fontFace: 'Patrick Hand SC' });
  sl.addText([
    { text: "Stress incontinence (F): Weakened pelvic floor → urethrovesical junction descends → loss of posterior urethrovesical angle → leakage on coughing/sneezing → treat with pelvic floor exercises / TVT\n", options: { color: INK } },
    { text: "Overflow incontinence: BPH → chronic retention → paradoxical incontinence\n", options: { color: INK } },
  ], { x: 7.3, y: 6.42, w: 5.6, h: 0.78, fontSize: 9.5, fontFace: 'Patrick Hand SC', lineSpacingMultiple: 1.15 });

  sl.addText("Remember: Obturator nerve (L2-4) lies on lateral bladder wall → at risk in radical cystectomy & pelvic node dissection", {
    x: 1.2, y: 7.08, w: 11.5, h: 0.3, fontSize: 10, bold: true, color: PURPLE, fontFace: 'Patrick Hand SC', align: 'center'
  });
}

// ─── SLIDE 9: Quick Revision / Summary Table ─────────────────────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "8. QUICK REVISION TABLE", "Urinary Bladder | One-Page Summary");

  // Summary table
  const tHeaders = ["Feature", "Detail", "Key Point"];
  const rows = [
    ["Position", "Lesser pelvis, behind pubic symphysis", "When FULL → rises above symphysis (abdominal!)"],
    ["Parts", "Apex, Body, Fundus (Base), Neck", "Neck = most fixed part"],
    ["Capacity", "~500 mL; urge at ~300 mL", "Children: bladder is abdominal organ"],
    ["Lining", "Transitional epithelium (Urothelium)", "4-6 layers (empty); 2 layers (full)"],
    ["Trigone", "Smooth triangular area at base; no rugae", "Derived from mesonephric duct (mesoderm)"],
    ["Detrusor", "3 smooth muscle layers; inner+outer=longitudinal, mid=circular", "Contracts: Parasympathetic (M3); Relaxes: Sympathetic (β₃)"],
    ["Int. Sphincter", "Smooth muscle at bladder neck", "Sympathetic (α₁) contracts; Parasympathetic relaxes"],
    ["Ext. Sphincter", "Skeletal muscle; membranous urethra", "Pudendal nerve (S2-4); VOLUNTARY"],
    ["Arterial supply", "Superior & inferior vesical arteries", "From internal iliac artery"],
    ["Venous", "Vesical venous plexus → internal iliac veins", "Communicates with Batson's plexus"],
    ["Lymphatics (sup)", "External iliac nodes", "Superior & lateral walls"],
    ["Lymphatics (base)", "Internal iliac nodes", "Fundus, trigone, anterior wall"],
    ["Sympathetic", "T11–L2 via hypogastric nerve", "FILLING: detrusor relaxes, sphincter contracts"],
    ["Parasympathetic", "S2–S4 pelvic splanchnic nerves", "VOIDING: detrusor contracts, sphincter relaxes"],
    ["Peritoneum", "Superior surface only (+ post. above trigone)", "Anterior wall = NO peritoneum → safe for suprapubic puncture"],
    ["Embryology", "Vesical part of urogenital sinus (endoderm)", "Urachus → median umbilical ligament"],
    ["Most common Ca", "TCC / Urothelial carcinoma", "Painless hematuria; spreads to external & internal iliac nodes"],
    ["VUR", "Ureters enter obliquely (antireflux)", "Short intramural segment → VUR → UTI, hydronephrosis"],
  ];

  // Draw table
  const tX = 1.1, tY = 0.72, cellH = 0.35;
  const colW = [2.5, 5.0, 4.5];
  const hdrColors = [HEADING, HEADING, HEADING];

  // Header row
  let cx = tX;
  tHeaders.forEach((h, c) => {
    sl.addShape(pres.ShapeType.rect, { x: cx, y: tY, w: colW[c], h: 0.38, fill: { color: HEADING }, line: { color: "FFFFFF", width: 0.5 } });
    sl.addText(h, { x: cx + 0.05, y: tY + 0.05, w: colW[c] - 0.1, h: 0.28, fontSize: 11, bold: true, color: "FFFFFF", fontFace: 'Patrick Hand SC', valign: 'middle' });
    cx += colW[c];
  });

  rows.forEach((row, r) => {
    const rowBg = r % 2 === 0 ? "F0F4F8" : "FFFDF4";
    cx = tX;
    row.forEach((cell, c) => {
      sl.addShape(pres.ShapeType.rect, { x: cx, y: tY + 0.38 + r * cellH, w: colW[c], h: cellH, fill: { color: rowBg }, line: { color: "C8D6E1", width: 0.3 } });
      const fontSize = cell.length > 60 ? 8 : 9;
      sl.addText(cell, { x: cx + 0.05, y: tY + 0.38 + r * cellH + 0.02, w: colW[c] - 0.1, h: cellH - 0.04, fontSize, color: c === 2 ? RED : INK, fontFace: 'Patrick Hand SC', valign: 'middle', wrap: true });
      cx += colW[c];
    });
  });
}

// ─── SLIDE 10: Mnemonics & Memory Aids ────────────────────────────────────────
{
  const sl = pres.addSlide();
  addRuledBg(sl);
  slideHeader(sl, "9. MNEMONICS & MEMORY AIDS", "Urinary Bladder | Exam Tips");

  const mnemonics = [
    {
      title: "Parts of Bladder: 'A Big Fat Neck'",
      details: "A = Apex (attached to median umbilical lig.)\nB = Body (main part)\nF = Fundus/Base (receives ureters)\nN = Neck (continues as urethra; most FIXED)",
      col: HEADING, bg: LIGHT_BG
    },
    {
      title: "S2,3,4 Keep Urine Off The Floor",
      details: "Pelvic splanchnic nerves (parasympathetic S2-S4) → CONTRACT detrusor → MICTURITION\nAlso pudendal nerve (S2-4) → SOMATIC control of external sphincter",
      col: GREEN, bg: GREEN_BG
    },
    {
      title: "Arterial Supply: 'SIVA'",
      details: "S = Superior vesical artery (from umbilical a.)\nI = Inferior vesical artery (internal iliac a.)\nV = Vesical plexus drains to internal iliac veins\nA = All from INTERNAL ILIAC artery system",
      col: RED, bg: RED_BG
    },
    {
      title: "Trigone: 2U+1U = Triangle",
      details: "2 Ureteric orifices (superolateral angles)\n+1 Urethral orifice (internal; inferior angle)\n= TRIGONE (base of bladder)\nConnected by Interureteric ridge (Mercier's bar)",
      col: ORANGE, bg: "FFF8EC"
    },
    {
      title: "Lymphatics: 'External wall → External nodes'",
      details: "Upper & lateral walls → EXTERNAL iliac nodes\nBase & Trigone → INTERNAL iliac nodes\nAll → ultimately → PARA-AORTIC nodes",
      col: PURPLE, bg: "F9F0FF"
    },
    {
      title: "Filling vs Voiding (PSVP rule)",
      details: "Para S2-4 → Voiding (contracts detrusor)\nSympathetic T11-L2 → Storage/Filling (relaxes detrusor, closes sphincter)\nVoluntary = Pudendal nerve (S2-4) → VOLUNTARY hold",
      col: "1A5276", bg: "EAF2FF"
    },
    {
      title: "Urachal Anomalies: 'PCSD'",
      details: "P = Patent urachus (urine at umbilicus)\nC = Cyst (infected swelling at midline)\nS = Sinus (opens at umbilicus only)\nD = Diverticulum (opens at bladder apex only)",
      col: ORANGE, bg: "FFF8EC"
    },
    {
      title: "Bladder Cancer Memory Aid: 'TCC SMOKES'",
      details: "T = TCC/Urothelial Ca (most common)\nC = Cyclophosphamide → hemorrhagic cystitis → risk\nS = Schistosomiasis → Squamous cell Ca\nM = Male (3:1 over female)\nO = painless hematuria (Obvious sign)\nK = Know: trigone most common site\nE = External iliac nodes (lymph spread)\nS = Smoking = #1 risk factor",
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    },
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// ─── Write file ──────────────────────────────────────────────────────────────
pres.writeFile({ fileName: "/home/daytona/workspace/bladder-notes/Urinary_Bladder_Anatomy_Notes.pptx" })
  .then(() => console.log("✅ PPTX created successfully!"))
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Urinary Bladder Anatomy Notes

Presentation · PPTX

What's Inside (10 Slides)

The notes are designed on a warm cream ruled-paper background with a red margin line, colored ink headings, and box callouts - mimicking the feel of high-quality university handwritten notes. Content is sourced from Color Atlas of Human Anatomy, Histology: A Text and Atlas, Guyton & Hall, The Developing Human, and Sabiston Textbook of Surgery.

Slide	Topic	Highlights
1	Title Page	Topic overview, date field
2	Introduction & Position	Parts (APEX / BODY / FUNDUS / NECK), male vs female relations, peritoneal coverage
3	Interior & Histology	Trigone (Mercier's bar, uvula vesicae), 4 wall layers, urothelium, detrusor, receptor pharmacology
4	Blood Supply & Lymphatics	Superior/inferior vesical arteries from internal iliac, vesical venous plexus → Batson's plexus, lymph node stations
5	Nerve Supply & Sphincters	Parasympathetic S2-4 / Sympathetic T11-L2 / Pudendal nerve, filling vs voiding table, micturition reflex
6	Embryology	Week-by-week timeline, urorectal septum, urachus → median umbilical ligament, 5 types of urachal remnants
7	Clinical Applied Anatomy	Suprapubic cystostomy, VUR, neurogenic bladder (UMN vs LMN), bladder injuries, carcinoma, cystitis
8	More Clinical	Vesical fistulae (4 types), cystoscopy landmarks, TURBT hazards, space of Retzius, stress incontinence
9	Quick Revision Table	18-row summary: every feature in one table
10	Mnemonics	"A Big Fat Neck", "S2-3-4 keeps urine off the floor", SIVA, Trigone 2U+1U, PCSD, TCC SMOKES

Key Diagrams Referenced

These authoritative textbook diagrams supplement the notes visually:

Urinary bladder anatomy - sagittal sections, trigone, male & female

Innervation of the bladder - sympathetic L1-2, parasympathetic S2-4, pudendal

Male and female bladder anatomy with detrusor, trigone, sphincters

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Urinary Bladder Anatomy Notes

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Urinary Bladder Anatomy Notes

Presentation · PPTX

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Urinary Bladder Anatomy Notes

PDF Document · PDF

Don't create pdf just write it here

📓 URINARY BLADDER — Anatomy Notes

with Clinical Applied Anatomy

1. INTRODUCTION & POSITION

Definition: Hollow, muscular, distensible reservoir for urine located in the lesser pelvis, posterior to the pubic symphysis.

Feature	Detail
Capacity	~500 mL; urge to void at ~300 mL
Shape (empty)	Pyramidal / tetrahedral
Shape (full)	Ovoid; apex rises above pubic symphysis into abdomen
Most fixed part	Neck (held by prostate in male / UG diaphragm in female)

2. PARTS OF THE BLADDER

A B F N → "A Big Fat Neck"

A — APEX

Anterosuperior tip
Attached to median umbilical ligament (obliterated urachus) → runs to umbilicus
Landmark during bladder surgery

B — BODY

Main bulk; has superior surface + 2 inferolateral surfaces
Superior surface covered by peritoneum
Anterolateral surfaces = no peritoneum (retropubic fat)

F — FUNDUS (Base)

Posterior wall, faces posteroinferiorly
Receives 2 ureters at its superolateral angles
Male: related to seminal vesicles + rectum
Female: related to uterus/cervix + vagina

N — NECK

Most inferior and fixed part
Continuous with urethra below
Male: rests on prostate gland
Female: rests on perineal membrane / UG diaphragm

3. RELATIONS

Male

Surface	Relation
Anterior	Retropubic space of Retzius, pubic symphysis
Superior	Peritoneum → loops of small intestine, sigmoid colon
Posterior	Seminal vesicles, vas deferens, rectovesical pouch, rectum
Inferior (neck)	Prostate gland

Female

Surface	Relation
Posterior (superior)	Uterus (body); separated by vesicouterine pouch
Posterior (base)	Anterior vaginal wall (firmly adherent)
Inferior (neck)	Perineal membrane / UG diaphragm

⚠️ Peritoneum covers only the SUPERIOR surface + part of posterior above trigone. Anterior & lateral walls = extraperitoneal → safe for suprapubic puncture!

4. INTERIOR OF THE BLADDER

Mucosal Surface

Most of bladder: Mucosa thrown into RUGAE / FOLDS when empty → disappear when distended
Trigone: Smooth, no folds, firmly adherent to detrusor → permanent smooth area

THE TRIGONE (Most Important Area!)

        Ureteric orifice (L)    Ureteric orifice (R)
                 ●──────────────────●
                  \    Interureteric  \
                   \    ridge (bar)    \
                    \                  \
                     ●
              Internal urethral orifice

Feature	Detail
Shape	Triangular
Superolateral angles (×2)	Ureteric orifices
Inferior angle	Internal urethral orifice
Transverse fold	Interureteric ridge (Mercier's bar) connecting ureteric orifices
In males	Uvula vesicae = small elevation above internal urethral orifice (due to median lobe of prostate)
Mucosa	Smooth, pale, always flat
Embryology	Derived from mesonephric duct (mesoderm)

★ No muscularis mucosae or submucosa in trigone (unlike rest of bladder)

5. HISTOLOGY / LAYERS OF BLADDER WALL

Layer 1 — UROTHELIUM (Transitional Epithelium)

Stratified; 4-6 cell layers when empty, 2-3 layers when distended
Surface "umbrella cells" — tight junctions → barrier against urine
Lines entire interior including trigone

Layer 2 — LAMINA PROPRIA

Loose vascular connective tissue
Contains thin muscularis mucosae (variable)
ABSENT in trigone (trigone goes straight to muscle)

Layer 3 — DETRUSOR MUSCLE (Most Important!)

Three ill-defined smooth muscle layers:
- Inner longitudinal
- Middle circular ← thickest
- Outer longitudinal
At bladder neck → circular fibers condense → Internal Urethral Sphincter (involuntary)
Receptor pharmacology:
- β₃ adrenergic → RELAXES detrusor (sympathetic, filling)
- M3 muscarinic → CONTRACTS detrusor (parasympathetic, voiding)

Layer 4 — ADVENTITIA / SEROSA

Adventitia (fibrofatty) on most surfaces
Serosa (peritoneum) only on superior surface + posterior above trigone

6. BLOOD SUPPLY

Arterial (all from Internal Iliac Artery)

Artery	Source	Supply
Superior vesical artery	Umbilical artery (patent part) → internal iliac	Superior, anterior, lateral walls; upper ureter
Inferior vesical artery	Anterior trunk of internal iliac (M) / Vaginal artery (F)	Base, neck, seminal vesicles, prostate (M)
Middle rectal artery	Internal iliac	Minor contribution to base

✏️ Rich collateral network → ligation of a single artery is NOT detrimental

Venous Drainage

Vesical venous plexus surrounds fundus/base
Drains → Internal Iliac Veins
Communicates with prostatic plexus (M) / vaginal plexus (F)
Also communicates with Batson's vertebral venous plexus → pathway for haematogenous metastasis!

7. LYMPHATIC DRAINAGE

Region	Drains to
Superior & lateral walls	External iliac nodes
Base (fundus) & Trigone	Internal iliac nodes
Anterior wall	Internal iliac nodes (via obturator channel)
All above → ultimately	Para-aortic (lateral aortic) nodes

★ Check obturator nodes during radical cystectomy — often skipped but involved early!

8. NERVE SUPPLY

MNEMONIC: "S2, 3, 4 keeps urine off the floor"

Parasympathetic (VOIDING)

S2, S3, S4 → pelvic splanchnic nerves → inferior hypogastric plexus
ACh → M3 receptors → detrusor CONTRACTS
NO release → internal sphincter RELAXES
= Micturition

Sympathetic (STORAGE / FILLING)

T11–L2 → hypogastric nerve → inferior hypogastric plexus
β₃ receptors → detrusor RELAXES
α₁ receptors → internal sphincter CONTRACTS
= Retention / filling

Somatic (VOLUNTARY)

Pudendal nerve (S2, S3, S4)
Innervates external urethral sphincter (striated/skeletal muscle)
Tonic contraction = continent at rest
Voluntary relaxation = micturition begins

Afferent (Sensory)

Stretch receptors → via pelvic splanchnic (S2-4) → sense fullness
Pain fibres → via sympathetic (T11-L2) → referred to hypogastrium / perineum / inner thigh

9. SPHINCTERS

Feature	Internal Sphincter	External Sphincter
Muscle type	Smooth (involuntary)	Skeletal (voluntary)
Location	Bladder neck	Membranous urethra (deep perineal pouch)
Nerve	Sympathetic (α₁) contracts; Parasympathetic relaxes	Pudendal nerve S2-4
Control	Autonomic	Voluntary (cortical)

10. MICTURITION REFLEX

FILLING PHASE:
Bladder fills → stretch receptors quiet
Sympathetic dominates:
  → Detrusor RELAXES (β₃)
  → Int. sphincter CONTRACTS (α₁)
  → Pudendal → Ext. sphincter CONTRACTS
  → CONTINENT ✓

VOIDING PHASE:
~300 mL → stretch receptors fire → S2-4
Parasympathetic dominates:
  → Detrusor CONTRACTS (M3)
  → Int. sphincter RELAXES (NO)
  → Pudendal inhibited → Ext. sphincter RELAXES
  → MICTURITION ✓

VOLUNTARY CONTROL:
Pontine micturition centre (Barrington's nucleus)
+ Frontal cortex inhibit until appropriate

11. EMBRYOLOGY

Development Timeline

Week	Event
Week 4	Cloaca forms = expanded terminal hindgut
Week 4–7	Urorectal septum divides cloaca → Urogenital sinus (ant.) + Rectum (post.)
Week 5–7	UG sinus divides into 3 parts: Vesical (→ bladder body) + Pelvic (→ urethra) + Phallic
Week 7	Allantois obliterates → Urachus (fibrous cord, apex to umbilicus)
Adult	Urachus → Median Umbilical Ligament
Week 8–12	Mesonephric ducts absorbed → contribute to trigone connective tissue

Epithelial Origins

Bladder body epithelium → Endoderm of cloaca
Trigone epithelium → Mesoderm (mesonephric duct)

Urachal Remnants — "PCSD + Ca" Mnemonic

Type	What's Open	Feature
Patent urachus	Both ends	Urine drips from umbilicus
Cyst	Middle only	Midline infraumbilical swelling; can get infected
Sinus	Umbilical end	Discharges at umbilicus
Diverticulum	Bladder end	Outpouching at apex of bladder
Urachal Ca	—	Rare adenocarcinoma at dome; mucin-secreting

12. CLINICAL APPLIED ANATOMY (HIGH YIELD)

① Suprapubic Cystostomy

Distended bladder rises above pubic symphysis
Peritoneum peels off anterior abdominal wall → extraperitoneal access
Needle inserted just above symphysis pubis → taps bladder without entering peritoneum
Used in: urethral trauma, BPH, post-op urinary retention

② Vesicoureteric Reflux (VUR)

Ureters enter bladder obliquely through detrusor (2–3 cm intramural course)
Detrusor tone compresses ureter = natural antireflux valve
If intramural segment too short → urine refluxes to kidney → recurrent UTI, hydronephrosis, renal scarring
Grade I–V; treat with antibiotics → surgical reimplantation (Cohen/Politano-Leadbetter)

③ Neurogenic Bladder

Lesion	Type	Features
UMN (above S2-4)	Spastic / Reflex bladder	Small capacity, detrusor overactivity, urge incontinence, high pressure
LMN (S2-4 / conus medullaris)	Flaccid / Autonomous bladder	Large residual volume, overflow incontinence, low pressure, retention

④ Bladder Injuries

Type	Cause	Feature
Intraperitoneal rupture	Blunt trauma to full bladder (dome ruptures)	Urine into peritoneum → peritonitis, ileus
Extraperitoneal rupture	Pelvic fracture lacerates anterolateral wall	Urine in retropubic / perivesical fat
Iatrogenic	Midline incision extended to pubis	Full bladder at risk if not displaced

⑤ Bladder Carcinoma

Most common: TCC / Urothelial carcinoma (~90%)
Classic presentation: Painless haematuria
Trigone = most common site
Lymphatic spread: External iliac → Internal iliac → Para-aortic
Schistosoma haematobium → Squamous cell carcinoma (calcification on X-ray / KUB)
Risk factors: Smoking (#1), aniline dyes, cyclophosphamide (→ haemorrhagic cystitis → Ca), radiation

⑥ Vesical Fistulae

Fistula	Cause	Hallmark
Vesicovaginal	Obstructed labour, gynae surgery	Continuous urinary incontinence per vagina
Vesicointestinal (colovesical)	Diverticular disease, Crohn's, colorectal Ca	Pneumaturia + fecaluria = pathognomonic
Vesicouterine	LSCS complication	Youssef's syndrome = cyclical haematuria + amenorrhoea
Urethrovaginal	Obstetric trauma	Positional incontinence into vagina

⑦ Space of Retzius (Retropubic Space)

Potential extraperitoneal space between pubic bones/rectus and anterior bladder wall
Contains loose areolar tissue, fat, vesical venous plexus
Used in: suprapubic cystostomy, radical prostatectomy, TVT for stress incontinence
Retropubic haematoma after pelvic fracture fills this space

⑧ Cystoscopy Landmarks

Trigone → smooth, pale, most common tumor/schistosomiasis site
Ureteric orifices → slit-like; visible efflux of urine (peristaltic jets)
Interureteric ridge → visible as transverse mucosal fold
Uvula vesicae (male) → elevation above internal meatus (median lobe of prostate)
Bladder dome/walls → rugae present when empty

⑨ TURBT Hazards

Dome resection → risk of intraperitoneal perforation
Lateral wall resection → obturator reflex (nerve stimulation → adductor spasm → bladder perforation)
Managed by: obturator nerve block, low current cutting, saline distension (non-electrolyte)

13. MNEMONICS SUMMARY

Mnemonic	Meaning
A Big Fat Neck	Apex, Body, Fundus, Neck
S2-3-4 keeps urine off the floor	Parasympathetic voiding via pelvic splanchnic
SIVA	Superior vesical, Inferior vesical, Vesical plexus, All from internal iliac
2U + 1U = Trigone	2 Ureteric orifices + 1 Urethral orifice
PCSD	Patent, Cyst, Sinus, Diverticulum (urachal remnants)
TCC SMOKES	TCC, Cyclophosphamide, Schistosomiasis, Male, painless haematuria, K=know trigone, External iliac nodes, Smoking
Ext. wall → Ext. nodes	Lateral walls → External iliac; Base → Internal iliac

📌 Exam Tips:

Trigone = smooth, no rugae, mesodermal origin, no muscularis mucosae

Most fixed part = neck; most mobile = dome/apex

Suprapubic puncture safe because peritoneum peels away from anterior wall when bladder is full

Painless haematuria = bladder Ca until proven otherwise

Pneumaturia = colovesical fistula (diverticular disease most common cause in adults)

VUR = short intramural ureteric segment → loss of antireflux mechanism

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