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← Human Body & HealthWhich mechanism explains why fertilization is blocked in individuals with severe cystic fibrosis affecting the vas deferens?
A)Enhanced sperm acrosome reaction
B)Increased prostate gland secretions
C)Elevated follicle-stimulating hormone
D)Congenital bilateral absence vas deferens✓
💡 Explanation
Fertilization is blocked in cystic fibrosis patients with congenital bilateral absence of the vas deferens because the vas deferens fails to develop properly, preventing sperm transport; therefore, the sperm cannot reach the egg for fertilization, rather than the other mechanisms affecting sperm function or hormonal regulation.
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