Medical exam colour diagram: Wound Healing by Primary and Secondary Intention side by side comparison. Left panel labelled "Primary Intention (Healing by First Intention)": clean incised wound with closely apposed edges, sutures holding edges, minimal clot, thin scar. Right panel labelled "Secondary Intention (Healing by Second Intention)": large irregular wound with wide gap, abundant granulation tissue filling from base, wound contraction arrows, larger scar. Both panels show timeline phases labelled: Day 1 (haematoma/clot, neutrophil infiltration), Days 2-3 (macrophages, granulation tissue begins), Days 3-7 (fibroblasts, collagen deposition, angiogenesis), Week 3+ (scar maturation, collagen remodelling). Use bright educational colours: red for blood vessels, pink for granulation tissue, blue for inflammatory cells, yellow for collagen fibres, green labels. Bold clear annotations. Medical textbook style.

Medical exam colour diagram: Granulation Tissue composition and phases. Central diagram showing microscopic cross-section of granulation tissue with clearly labelled colour-coded components: (1) New capillary loops/angiogenesis shown in bright red, (2) Fibroblasts shown in purple spindle shapes, (3) Myofibroblasts shown in dark blue spindle cells with contractile arrows, (4) Macrophages shown in large pink cells, (5) Collagen fibres shown in yellow wavy lines, (6) Extracellular matrix in light green background, (7) Oedematous stroma in pale blue. Timeline ribbon on side showing 3 phases: Phase 1 - Inflammation (Days 1-3, neutrophils, macrophages), Phase 2 - Proliferation (Days 4-14, fibroblasts, angiogenesis, granulation tissue), Phase 3 - Remodelling/Maturation (Weeks 3+, collagen cross-linking, scar). Gross appearance box: "Pale pink, granular, soft, bleeds easily on touch". Medical textbook educational style, bright colours, bold labels.

Medical exam colour diagram: Steps of Fracture Healing - 5 sequential stages shown as left to right timeline with cross-sectional bone diagrams. Stage 1 - Haematoma Formation (Day 1-2): bone fragments, haematoma in dark red filling fracture gap, periosteum lifted. Stage 2 - Fibrocartilaginous Callus/Soft Callus (Days 3-14): granulation tissue invading haematoma in pink, fibroblasts and chondroblasts in purple, cartilage shown in light blue, periosteal cells proliferating. Stage 3 - Hard/Bony Callus (Weeks 3-12): woven bone (immature) in orange replacing cartilage via endochondral ossification, bony collar visible around fracture. Stage 4 - Remodelling (Months-Years): lamellar bone in yellow-orange, osteoclast resorption shown, medullary canal restored. Stage 5 - Final Result: restored cortex, scar-free bone appearance. Complications box at bottom: Malunion, Nonunion, Avascular necrosis, Infection, Osteomyelitis, Myositis ossificans. Bright educational colours, anatomical labels, medical textbook style.