Which event allows a sperm to penetrate the zona pellucida after it contacts the secondary oocyte?
Correct answer: A. The acrosome reaction
- A. The acrosome reaction
- B. The menstrual reaction
- C. The luteal reaction
- D. The endometrial reaction
Explanation
The acrosome reaction releases enzymes from the sperm head that help it penetrate the zona pellucida. This is different from capacitation, which prepares sperm for fertilisation within the female reproductive tract.
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About Reproductive Anatomy and Conception
Female and male reproductive organs, pelvic anatomy, gametogenesis, the menstrual cycle and the hormonal control of ovulation lead into fertilisation, implantation and early embryonic development. Questions distinguish ovulation from menstruation, fertilisation from implantation, and the normal anatomical changes that allow conception and pregnancy to occur.
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