I have a seminar on Migrating Motor Complexes, Physiology.

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Migrating Motor Complex (MMC) - Physiology Seminar Notes

1. Definition & Overview

The Migrating Motor Complex (MMC) is a cyclical pattern of electrical and contractile activity that occurs in the stomach and small intestine during the fasting (interdigestive) state. It is often called the "intestinal housekeeper" or "gastrointestinal housekeeper" because its primary function is to sweep undigested residue, debris, sloughed cells, and mucus from the stomach and small intestine into the colon - clearing the gut in preparation for the next meal.

Each complete cycle lasts approximately 90-100 minutes under fasting conditions (longer at night, shorter during the day)
The complex migrates aborally (from stomach toward distal ileum) at ~5 cm/min
In healthy individuals it is most prominent at night

"During the fasting period, the motility of the small intestine is characterized by a cyclical event called the migrating motor complex (MMC), which serves to clear nondigestible residue from the small intestine." - Harrison's Principles of Internal Medicine, 22e

2. The Four Phases of the MMC

MMC phases diagram showing cyclical activity from stomach to distal ileum, with the three phases labeled and complete inhibition during a meal

Figure: Migrating Motor Complexes. The three/four phases cycle every 90-100 min. Note complete inhibition by a meal, resuming 90-120 min after feeding. (Ganong's Review of Medical Physiology, 26e)

Phase	Duration (% of cycle)	Activity	Key Features
Phase I	~50%	Quiescence	Motor inactivity; no high-amplitude contractions
Phase II	~25%	Irregular activity	Intermittent, high-amplitude, generally nonpropulsive contractions; resembles fed-state motility
Phase III	~5-10 min	Activity front	Burst of intense, regular, propulsive contractions at maximum frequency
Phase IV	Brief	Transition	Short transition back to Phase I

Phase I - Quiescence

Period of relative motor inactivity
No high-amplitude muscular contractions
Approximately half the total MMC cycle duration

Phase II - Irregular Activity

Intermittent pressure activity with irregular, high-amplitude contractions
Generally nonpropulsive
~25% of the cycle
Controlled by the vagus nerve - vagotomy abolishes Phase II

Phase III - Activity Front (Most Important Physiologically)

The defining feature of the MMC
Intense, regular (~3/min in stomach; 11-12/min in duodenum; 8/min in ileum) propulsive contractions
Lasts only 5-10 minutes but effectively sweeps the lumen clean
Migrates aborally from stomach to distal ileum
Corresponds to peak serum motilin levels
The onset of Phase III signals the return of hunger in humans
Persists even in the autotransplanted stomach (devoid of extrinsic nerves), indicating regulation by intrinsic nerves/hormones
Associated with increased gastric secretion, bile flow, and pancreatic secretion

Phase IV - Transition

Brief transition period back to Phase I quiescence

Schwartz's Principles of Surgery, 11e: "Phase III, a period of intense, regular (about 3/min), propulsive contractions, only lasts about 5 to 10 minutes. Most phase III complexes of the GI MMC begin in the stomach, and the frequency approximates that of the myoelectric gastric slow wave."

3. Hormonal Regulation - Motilin

Motilin is the primary hormonal regulator of the MMC.

Source: Secreted by Mo/ECL cells in the duodenum and upper small intestinal mucosa (throughout small intestine)
Pattern: Released cyclically every ~100 minutes during the interdigestive/fasting state
Mechanism: Peak motilin levels correspond temporally to Phase III initiation in the distal stomach; motilin receptors are found on gastric smooth muscle and enteric nerves
Inhibition: Meal ingestion suppresses motilin secretion, abolishing the MMC and switching to the fed motor pattern
Evidence for role: Resection of the duodenum abolishes distal gastric Phase III (e.g., after a Whipple procedure, causing post-op delayed gastric emptying)

Other Neurohumoral Modulators

Nitric oxide (NO) and VIP: inhibitory mediators of gastric relaxation
Endogenous opioids: modulate MMC activity
Intrinsic cholinergic and adrenergic nerves: modulate phases
Duodenal pH: influences MMC activity
Vagal input: required for Phase II; Phase III is vagal-independent (persists after vagotomy)
CCK: involved in switching from fasting to fed pattern on food ingestion
Ghrelin: despite being a major hunger hormone, appears to have little role in Phase III

Ganong's Review of Medical Physiology, 26e: "The MMCs are initiated by motilin. The circulating level of this hormone increases at intervals of approximately 100 min in the interdigestive state, coordinated with the contractile phases of the MMC."

4. Underlying Electrophysiology

The MMC is built upon the Basic Electrical Rhythm (BER) of the GI tract:

Pacemaker cells: Interstitial Cells of Cajal (ICC) - stellate mesenchymal cells with pacemaker function, located in the outer circular muscle layer near the myenteric plexus
BER rates:
- Stomach: ~3-4/min
- Duodenum: ~12/min
- Distal ileum: ~8/min
BER oscillates between -65 and -45 mV; spike potentials superimposed on depolarizing waves cause actual muscle contraction
Spike potential depolarization: Ca²⁺ influx; repolarization: K⁺ efflux
Acetylcholine increases spike frequency and muscle tension; epinephrine decreases them

5. Fed vs. Fasting Motor Patterns

Parameter	Fasting (Interdigestive)	Fed (Postprandial)
Pattern	Cyclic MMC (phases I-IV)	Irregular, mixing contractions
Duration	~90-100 min per cycle	1 hr per 200 kcal ingested
Predominant hormone	Motilin (rising)	Motilin suppressed; CCK active
Function	Housekeeping, propulsion of debris	Mixing, digestion, absorption
Contraction type	Phase III: maximal propulsive	Irregular, moderate amplitude

Transition from fasting to fed: Within ~10 minutes of food ingestion, the MMC is abolished and fed motor pattern begins (resembles Phase II)
Transition back to fasting: MMC resumes ~90-120 minutes after a meal

6. Functions of the MMC

Housekeeping: Propels undigested food particles, debris, desquamated cells, and mucus from stomach and small intestine into the colon
Prevention of SIBO: The "cleansing action" of Phase III limits bacterial colonization of the small intestine; loss of MMC is a major risk factor for Small Intestinal Bacterial Overgrowth (SIBO)
Gastric emptying of indigestibles: Empties large, non-digestible particles (>2 mm) that cannot be cleared during the fed state
Coordinated secretion: Each MMC cycle is accompanied by increased gastric acid secretion, bile flow (gallbladder empties during Phase II), and pancreatic secretion
Hunger signaling: Phase III onset correlates with the perception of hunger

7. Clinical Significance

Conditions Associated with Loss of MMC

Condition	Mechanism/Note
Scleroderma/PSS	Visceral myopathy disrupts Phase III; octreotide may partially restore it
Diabetic neuropathy	Autonomic neuropathy impairs MMC cycling
Post-surgical states	Whipple procedure (duodenectomy) abolishes Phase III → delayed gastric emptying
SIBO	Loss of MMC "housekeeping" allows bacterial overgrowth
Gastroparesis	Impaired MMC contributes to symptom burden

Pharmacological Manipulation

Erythromycin (macrolide): Directly stimulates motilin receptors on GI smooth muscle → promotes onset of MMC → used as a prokinetic in gastroparesis
Octreotide (somatostatin analogue): May improve Phase III in scleroderma patients (used in combination with antibiotics for SIBO)
Opioids: Impair MMC cycling (a mechanism of opioid-induced constipation and ileus)

Katzung's Basic and Clinical Pharmacology, 16e: "Macrolide antibiotics such as erythromycin directly stimulate motilin receptors on gastrointestinal smooth muscle and promote the onset of a migrating motor complex."

8. Circadian Variation

The MMC shows a circadian rhythm in its propagation velocity - slowest during sleep (noted in Bradley and Daroff's Neurology in Clinical Practice)
Cycle length is longer at night and shorter during daytime waking hours
Phase III is most prominent nocturnally in healthy individuals (Yamada's Textbook of Gastroenterology, 7e)

9. Quick Summary Table

Feature	Detail
Occurs during	Fasting/interdigestive state
Cycle duration	~90-100 min (longer at night)
Propagation speed	~5 cm/min (aborally)
Initiating hormone	Motilin (from duodenal Mo/ECL cells)
Abolished by	Meal ingestion (within 10 min)
MMC resumes after meal	90-120 min post-feeding
Pacemaker cells	Interstitial Cells of Cajal
Phase III frequency	Stomach: 3/min; Duodenum: 12/min; Ileum: 8/min
Phase III control	Intrinsic/hormonal (vagal-independent)
Phase II control	Vagal-dependent (vagotomy abolishes it)
Clinical nickname	"Intestinal housekeeper"

Sources:

Ganong's Review of Medical Physiology, 26e
Harrison's Principles of Internal Medicine, 22e
Schwartz's Principles of Surgery, 11e
Yamada's Textbook of Gastroenterology, 7e
Goldman-Cecil Medicine
Katzung's Basic and Clinical Pharmacology, 16e
Guyton and Hall Textbook of Medical Physiology

I have a seminar on Migrating Motor Complexes, Physiology. Give me a short, 2-3 lines introduction and conclusion each. Unique, creative, catchy, Physiology POV strong.

Introduction:

The gut never truly rests. Between meals, while the body winds down, the small intestine launches a disciplined, wave-like sweep from stomach to ileum - the Migrating Motor Complex - a biological reset that clears debris, starves bacteria, and readies the tract for the next digestive challenge. It is not digestion; it is preparation.

Conclusion:

The MMC is proof that physiology is never passive - even silence (Phase I) is purposeful, and every contractile wave is the gut writing its own maintenance schedule in the language of motilin. Disrupt this rhythm, and the consequences ripple outward: bacterial overgrowth, stasis, dysfunction. Respect the housekeeper, and the house stays clean.

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Clinical Physiology of the Migrating Motor Complex

The Core Principle: When the Housekeeper Stops Working

Every clinical consequence of MMC disruption follows one simple physiological logic: Phase III is the gut's sanitation crew. When it fails - whether from neuropathy, myopathy, drugs, or surgery - you get stasis, bacterial overgrowth, malabsorption, and pain. The clinical presentation is the physiology gone wrong.

1. Small Intestinal Bacterial Overgrowth (SIBO) - The Canonical MMC Failure State

The small intestine is kept near-sterile by three physiological barriers:

Gastric acid - kills ingested organisms
MMC Phase III - physically sweeps bacteria aborally before they colonize
Ileocecal valve - limits reflux of colonic flora

"Normal fasting intestinal motor activity (i.e., migrating motor complex) prevents accumulation of bacteria within the small intestine." - Sleisenger & Fordtran's, GI & Liver Disease

When MMC is impaired or absent, bacteria accumulate in the small bowel and compete with the host for nutrients - producing a cascade of consequences:

Pathophysiologic Process	Consequence
Mucosal injury by bacteria/toxins	Loss of brush-border enzymes, carbohydrate maldigestion
Bacterial competition for B₁₂	Megaloblastic anemia, neurological symptoms
Enhanced intestinal permeability	Protein-losing enteropathy, endotoxemia
Bacterial fermentation of food	Bloating, gas, diarrhea
Fat malabsorption	Steatorrhea, fat-soluble vitamin deficiency

Diseases causing MMC loss → SIBO:

Diabetic autonomic neuropathy
Systemic sclerosis / Scleroderma
Amyloidosis
Hypothyroidism
Idiopathic intestinal pseudoobstruction
Acromegaly
Chronic opioid use
Small bowel diverticulosis
Post-surgical anatomy (Billroth II, end-to-side anastomosis)

2. Scleroderma (Systemic Sclerosis) - Model of Myopathic MMC Loss

Scleroderma is the textbook example of myopathic MMC disruption.

Pathophysiology progression:

Early disease: Anti-M3 muscarinic receptor antibodies impair excitatory neurotransmission (submucosal and myenteric plexuses initially appear normal)
Late disease: Smooth muscle degeneration and collagen replacement - particularly the circular muscle layer - causing end-stage dysmotility

Manometric findings (pathognomonic):

Complete absence of the interdigestive MMC in many patients
Only clusters of propagated/nonpropagated contractions in others
Abnormally prolonged MMC cycle
Diminished or absent Phase III activity
Small intestinal contractile amplitude below 10 mmHg during fasting and postprandially (vs. normal ~40 mmHg in antrum)
"Hide-bound" bowel sign on contrast studies: dilated duodenum/jejunum with narrow, crowded valvulae conniventes despite bowel dilation

Clinical consequences: Steatorrhea, malabsorption, weight loss, Chronic Intestinal Pseudo-Obstruction (CIPO)

Treatment targeting the MMC:

Erythromycin (oral): short-term improvement in gastric emptying and symptoms
Octreotide (50 µg SC at bedtime, at least 3h after last meal): induces Phase III-like MMC activity, propels residue toward colon, reduces SIBO - must be given after meals to avoid retarding gastric emptying

"Octreotide retards gastric emptying and small bowel transit; it should be used at least 3h after all meals have been ingested, in order to induce phase III MMC-like activity." - Yamada's Textbook of Gastroenterology, 7e

3. Diabetic Gastroparesis/Neuropathy - Neuropathic MMC Pattern

In diabetic autonomic neuropathy, the MMC dysfunction is neuropathic in character (unlike scleroderma's myopathic pattern).

Manometric hallmarks of neuropathic pattern:

Uncoordinated bursts of intense contractions of variable duration but normal amplitude
MMC absent or abnormal
Abnormal rate of migration; retrograde propagation of Phase III activity front
Activity fronts appear normal proximally, then arrest or disappear distally
MMC-like fasting activity persists postprandially - the fed pattern fails to replace the fasting pattern (normally, MMC is abolished for 1 hour per 200 kcal ingested)
Antral contraction frequency < 1/min in the first hour postprandially (normal: average 2/min)
Tonic pyloric contractions

This creates a clinical paradox: the patient has eaten, but the gut behaves as if fasting - disrupting the coordinated fed-pattern mixing and propulsion needed for digestion.

4. Chronic Intestinal Pseudo-Obstruction (CIPO)

CIPO presents with symptoms of bowel obstruction (distension, nausea, inability to tolerate feeds) without a mechanical cause. The underlying physiology is failure of the MMC and interdigestive motor program.

Management targeting MMC restoration:

Pyridostigmine + erythromycin: increase small bowel contractions and promote transit
Octreotide (25-200 µg SC at bedtime): elicits propagative contractile patterns mimicking the fasting MMC; shown to improve symptoms and reduce bacterial overgrowth markers in scleroderma-related CIPO
Cyclic antibiotics for secondary SIBO
Venting gastrostomy for symptom relief
Home TPN or small intestinal transplantation in refractory cases

5. Post-Surgical States - Iatrogenic Phase III Loss

Whipple procedure (pancreaticoduodenectomy): Resection of the duodenum - the source of motilin-secreting Mo/ECL cells - abolishes distal gastric Phase III. This is a direct cause of early post-operative delayed gastric emptying seen after Whipple, and it explains why this complication is so common (40% of cases).

The physiological principle: no duodenum = no motilin = no Phase III = no housekeeping sweep.

6. Pharmacological Exploitation of the MMC

Erythromycin - Motilin Receptor Agonist

Erythromycin is the prototype clinical tool for MMC manipulation:

Dose	Effect
Low dose (0.5-1 mg/kg IV bolus)	Induces sweeping peristaltic motor activity resembling Phase III; used in gastroparesis, pre-EGD gastric clearance, pseudo-obstruction
High dose (3 mg/kg q8h slow IV infusion)	Intense antral activity, rapid gastric emptying; may cause cramps/diarrhea from small bowel involvement

Mechanism: Binds motilin receptors on GI smooth muscle and cholinergic enteric neurons (the neuronal component is critical for full in vivo effect).

Clinical indications:

Acute gastroparesis (diabetic, post-surgical, idiopathic)
Clearing stomach of retained food/blood before emergency EGD
ICU gastroparesis (IV route)
CIPO (lower doses)

Limitations:

Tachyphylaxis develops relatively promptly
QT prolongation risk (azithromycin carries FDA cardiac warning)
Oral bioavailability uncertain for prokinetic use
Antibiotic properties carry risk of C. difficile colitis with prolonged use

Emerging agents: Synthetic motilin agonists devoid of antibiotic activity are in development. Ghrelin receptor agonists (ulimorelin, mitemcinal) also have prokinetic action via a related mechanism.

Octreotide - Phase III Mimicker

A somatostatin analogue that, paradoxically, induces Phase III-like activity in the small intestine at low doses (25-200 µg SC)
Does NOT restore gastric emptying (actually retards it) - must be timed after all meals
Best used in neuropathic/myopathic dysmotility where motilin signaling is intact but muscular response is abnormal

7. Opioid-Induced Gut Dysmotility - A Drug Class Effect

Chronic opioid use suppresses the MMC, contributing to:

Small bowel stasis
SIBO
Opioid-induced constipation (OIC)

Opioid receptors in the enteric nervous system inhibit the excitatory neuronal pathways that generate and propagate Phase III. This is distinct from the central constipating effect - it is a direct enteric effect on the housekeeper cycle.

8. MMC as a Diagnostic Tool - Antroduodenal Manometry

MMC patterns on antroduodenal manometry distinguish neuropathic from myopathic dysmotility:

Finding	Neuropathic	Myopathic
Contraction amplitude	Normal	Low (<10 mmHg small bowel)
MMC pattern	Absent/uncoordinated/retrograde	Absent/prolonged cycle
Phase III	Arrests distally	Diminished/absent
Fed pattern	MMC persists post-prandially	Hypomotility throughout

This distinction matters clinically: neuropathic patterns may respond better to prokinetics acting on enteric neurons (erythromycin), while myopathic patterns have a worse prognosis and may require nutritional support.

Summary: Clinical Physiology at a Glance

Clinical Scenario	MMC Failure Mechanism	Key Consequence	Treatment Targeting MMC
Scleroderma	Smooth muscle fibrosis (myopathic)	CIPO, SIBO, malabsorption	Octreotide (nocturnal Phase III induction)
Diabetic neuropathy	Autonomic neuropathy (neuropathic)	Gastroparesis, MMC persists post-prandially	Erythromycin, metoclopramide
Post-Whipple	Motilin source removed	Post-op delayed gastric emptying	Prokinetics
Opioid use	Enteric opioid receptor activation	SIBO, constipation, stasis	Opioid antagonists (methylnaltrexone)
CIPO	Neuropathic or myopathic	Obstruction-like symptoms, SIBO	Octreotide, pyridostigmine, erythromycin
SIBO (any cause)	MMC Phase III loss	Malabsorption, B₁₂ deficiency, diarrhea	Antibiotics + address underlying cause

Sources: Yamada's Textbook of Gastroenterology, 7e - Sleisenger & Fordtran's GI & Liver Disease - Harrison's Principles of Internal Medicine, 22e - Katzung's Basic and Clinical Pharmacology, 16e - Schwartz's Principles of Surgery, 11e - Goodman & Gilman's Pharmacological Basis of Therapeutics

Create a scientific image of pictorial representation of MMC.

Create a scientific image of pictorial representation of MMC. Non AI, scientific, simple, white background.

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Scientific diagram of the Migrating Motor Complex (MMC) of the gastrointestinal tract. White background. Clean, minimal, textbook-style medical illustration. Left side: a vertical anatomical cross-section outline of the GI tract from stomach down to distal ileum, with labeled anatomical regions: Stomach, Duodenum, Jejunum, Ileum. Simple line drawing, no color fill, just black outlines. Right side: a manometry-style graph showing MMC activity over time. X-axis labeled "Time (minutes)", Y-axis labeled "Contractile Activity". Four horizontal rows of tracings corresponding to the four GI regions (Stomach, Duodenum, Jejunum, Ileum). Each row shows the classic MMC waveform pattern: flat line (Phase I - quiescence), small irregular waves (Phase II - irregular contractions), a tall sharp burst of high-amplitude regular waves (Phase III - activity front), then back to flat (Phase IV transition). The Phase III burst is staggered progressively later in time as you go from Stomach to Ileum, showing the aboral migration of the complex with a diagonal arrow connecting the Phase III peaks labeled "Aboral migration ~5 cm/min". Below the graph: a timeline bar divided into four segments labeled: Phase I (quiescence, ~50%), Phase II (irregular activity, ~25%), Phase III (activity front, ~10 min), Phase IV (transition). A vertical dashed line labeled "MEAL" interrupts the waveforms, after which all tracings show continuous irregular moderate-amplitude waves labeled "Fed pattern". Another dashed line 90 min later shows MMC resuming. Key annotations: "Cycle = 90-100 min", "Initiated by Motilin", "Intestinal Housekeeper". All text in clean sans-serif font. Black lines on white background. Scientific journal figure style.

Here is the scientific pictorial representation of the MMC. It shows:

Left: GI tract outline from stomach to ileum with regional labels
Right: Staggered manometry-style tracings for each segment, with Phase I (quiescence), Phase II (irregular), and Phase III (activity front burst) clearly offset aborally - illustrating the migrating nature of the complex
Diagonal arrow connecting Phase III peaks to show aboral progression at ~5 cm/min
MEAL interruption with the fed pattern replacing MMC cycling
Phase timeline bar at the bottom with proportional durations
Key labels: 90-100 min cycle, motilin, "intestinal housekeeper"

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mkdir -p /home/daytona/workspace/mmc-diagram && curl -s "https://cdn.orris.care/image-gen/7f944ac19b55478dbf8e1822301405c1.png" -o /home/daytona/workspace/mmc-diagram/MMC_Diagram.png && echo "Done" && ls -lh /home/daytona/workspace/mmc-diagram/

Here you go:

MMC Diagram

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You can colour the GIT part on left. Make the new image downloadable.

Generating Image

Scientific diagram of the Migrating Motor Complex (MMC) of the gastrointestinal tract. White background. Clean, minimal, textbook-style medical illustration. Left side: a vertical anatomical illustration of the GI tract from stomach down to distal ileum, with distinct colors for each region: Stomach in pale pink/rose, Duodenum in light orange, Jejunum in light green, Ileum in light blue. Each region clearly labeled with black text: "Stomach", "Duodenum", "Jejunum", "Ileum". Simple anatomical shapes, softly colored fills, black outlines. Right side: a manometry-style graph showing MMC activity over time. X-axis labeled "Time (minutes)", Y-axis labeled "Contractile Activity". Four horizontal rows of tracings corresponding to the four GI regions, each row color-matched to the anatomy on the left (pink for stomach, orange for duodenum, green for jejunum, blue for ileum). Each row shows the classic MMC waveform: flat line (Phase I), small irregular waves (Phase II), a tall sharp burst of high-amplitude regular waves (Phase III), then flat again (Phase IV). The Phase III burst is staggered progressively later in time from Stomach to Ileum, with a diagonal arrow connecting the Phase III peaks labeled "Aboral migration ~5 cm/min". Below the graph: a horizontal timeline bar divided into four color-coded segments: Phase I (gray, quiescence ~50%), Phase II (yellow, irregular ~25%), Phase III (red, activity front ~10 min), Phase IV (light gray, transition). A vertical dashed black line labeled "MEAL" interrupts all tracings, after which all rows show continuous irregular moderate waves labeled "Fed pattern". Labels: "Cycle = 90-100 min", "Initiated by Motilin", "Intestinal Housekeeper". Clean sans-serif font throughout. Scientific journal figure style.

Running Command

curl -s "https://cdn.orris.care/image-gen/4c41748e6e9047298415ad85c41fd0f2.png" -o /home/daytona/workspace/mmc-diagram/MMC_Diagram_Coloured.png && echo "Done" && ls -lh /home/daytona/workspace/mmc-diagram/

Here is the updated version with the GIT regions colour-coded - stomach in pink, duodenum in orange, jejunum in green, and ileum in blue - with the manometry tracings colour-matched to each segment.

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MMC Diagram Coloured

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I loved the original one.

I loved the original black & white one. Keep the format exactly the same and make colour changes in it.

Generating Image

Scientific diagram of the Migrating Motor Complex (MMC) of the gastrointestinal tract. White background. Clean, minimal, textbook-style medical illustration. EXACT same layout as before. Left side: a vertical anatomical cross-section outline of the GI tract from stomach down to distal ileum. Simple line drawing with BLACK outlines. Each region filled with a soft anatomical color: Stomach filled with pale rose/pink, Duodenum filled with light peach/orange, Jejunum filled with soft sage green, Ileum filled with light sky blue. Labeled: Stomach, Duodenum, Jejunum, Ileum in black text. Right side: manometry-style graph. X-axis labeled "Time (minutes)", Y-axis labeled "Contractile Activity". Four horizontal rows of waveform tracings for Stomach, Duodenum, Jejunum, Ileum. All waveform lines in BLACK. Background of each row is white. Each row shows: flat baseline (Phase I), small irregular waves (Phase II), tall sharp burst of regular high-amplitude waves (Phase III), then flat again (Phase IV). Phase III burst staggered progressively later from Stomach to Ileum rows. Diagonal black arrow connecting Phase III peaks labeled "Aboral migration ~5 cm/min". Below graph: horizontal timeline bar divided into four labeled segments with subtle colors: Phase I (light gray), Phase II (light yellow), Phase III (light red/salmon), Phase IV (light gray). Labels: "Phase I - Quiescence ~50%", "Phase II - Irregular ~25%", "Phase III - Activity Front ~10 min", "Phase IV - Transition". Vertical dashed black line labeled "MEAL" interrupting waveforms. After MEAL: continuous irregular moderate waves labeled "Fed pattern". Annotations: "Cycle = 90-100 min", "Initiated by Motilin", "Intestinal Housekeeper". Clean sans-serif black font. Scientific journal figure style. White background throughout.

Running Command

curl -s "https://cdn.orris.care/image-gen/e0d01ab47b1843aba141a05983b28268.png" -o /home/daytona/workspace/mmc-diagram/MMC_Diagram_Colour_v2.png && echo "Done" && ls -lh /home/daytona/workspace/mmc-diagram/

MMC Diagram - original format with colour

Same layout as the original - black waveform lines, white background, all the annotations intact - with the GIT regions on the left now filled with soft anatomical colours (pink stomach, peach duodenum, sage green jejunum, sky blue ileum) and the phase timeline bar subtly colour-coded at the bottom.

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MMC Diagram Colour v2

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