Onset of menstruation is due to:
Correct answer: A. Fall in level of progesterone
- A. Fall in level of progesterone
- B. Increase in estrogen level
- C. Increase in FSH level
- D. Decrease in oxytocin level
Explanation
When progesterone secretion is reduced its supporting effect on the endometrium decreases so, it breakdown causing menstruation. So option A is correct.
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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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