During a female's fertile years, about how many oocytes develop into mature eggs?
Correct answer: D. 450
- A. 20,000
- B. 250,000
- C. 300,000
- D. 450
Explanation
Each female ovary potentially contains 200,000 follicles. Formed before her birth, of these, only several hundred will release egg cells during the female reproductive years. Considering this, 450 is the correct option.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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