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← Human Body & HealthWhich mechanism explains why sperm capacitation occurs within the female reproductive tract?
A)Increased ATP production is needed
B)Epithelial secretions destabilize acrosome✓
C)Reduced oocyte membrane fluidity
D)Progesterone blocks calcium influx
💡 Explanation
Sperm capacitation involves destabilization of the acrosome membrane, preparing the sperm for fertilization. Epithelial secretions mediate this process because they remove cholesterol and proteins from the sperm's membrane, therefore priming it for the acrosome reaction rather than direct energy boost or oocyte changes.
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