Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Human Body & HealthWhy does skin graft contraction occur during wound healing?
A)Keratinocyte proliferation exceeds collagen deposition
B)Reduced blood flow inhibits myofibroblast activity
C)Myofibroblasts exert tension on collagen fibers✓
D)Excessive elastin production reduces skin flexibility
💡 Explanation
Skin graft contraction happens because myofibroblasts differentiate and exert tension on the newly deposited collagen fibers in the wound bed, leading to shrinkage of the graft. Therefore, the correct answer is myofibroblast contraction; rather than proliferation or elastin production, which don't explain the tensile forces.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Human Body & Health →- If a mutation disables a growth factor receptor in cancer cells, but they continue dividing rapidly despite limited nutrient availability, which consequence is most likely?
- A patient with iodine deficiency consumes goitrogenic foods (cassava). Which feedback response most likely exacerbates thyroid enlargement?
- An elderly patient presents with accumulating amyloid plaques in the brain. Which mechanism explains why age-related decline reduces amyloid clearance via the glymphatic system?
- Why does diffuse axonal injury from concussive events cause widespread neurological deficits in the brain, even if a CT scan shows no macroscopic lesions?
- What causes increased appetite despite high circulating levels of leptin in some obese individuals?
- If a patient's hypothalamus is damaged, impairing its thermoregulatory function, why does profound hyperthermia become life-threatening, compared to mild elevations?
