. Acrosomal reaction of the sperm occurs due to
A: its contact with zona pellucida of the ova
B: reactions within the uterine environment of the female
C: reactions within the epididymal environment of the male
D: androgens produced in the uterus.
- Acrosomes release their contents by exocytosis when the head of sperm binds to zona pellucida of ovum.
- Various hydrolytic enzymes like corona penetrating enzymes, hyaluronidase, etc are there inside the acrosome.
- This reaction is termed as an acrosomal reaction.
- By dissolving corona radiata and zona pellucida, it helps the sperm to reach the plasma membrane of the ovum.
Final Answer :
Hence, the correct option is A, i.e. its contact with zona pellucida of the ova.