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← Nature & AnimalsWhich physiological challenge arises in hibernating mammals due to reduced erythrocyte deformability?
A)Increased risk of microvascular occlusion✓
B)Enhanced oxygen loading in lungs
C)Decreased nutrient delivery to tissues
D)Reduced carbon dioxide removal efficiency
💡 Explanation
Microvascular occlusion risk greatly increases because reduced temperature decreases erythrocyte flexibility impacting blood flow via altered membrane protein configuration; therefore, cells become rigid, rather than staying flexible for narrow capillaries preventing blood clots under hypothermic conditions.
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