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← Human Body & HealthWhy does lymphedema, chronic tissue swelling, persist after initial inflammatory phase reduction?
A)Reduced aquaporin-1 water channel expression
B)Increased histamine-induced vasodilation occurs
C)Elevated angiotensin II receptor activity
D)Impaired lymphatic vessel smooth muscle contraction✓
💡 Explanation
Lymphedema persists because of mechanical failure of lymphatic drainage; specifically, impaired lymphatic vessel smooth muscle contraction prevents adequate fluid transport. This leads to chronic fluid accumulation rather than temporary inflammation, therefore lymphatic dysfunction explains the long-term swelling.
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