The human menstrual cycle generally repeats after how many days?
Correct answer: B. 28 days
- A. 20 days
- B. 28 days
- C. 10 days
- D. 40 days
Explanation
Option B is correct since the average length of the menstrual cycle in an adult female is 28 days.Option A is incorrect since the 20-day menstrual cycle rarely occurs in females who are emotionally or physically disturbedOption C is incorrect since a repeat of the menstrual cycle after 10 days indicates that the level of the hormone estrogen is significantly low, indicating hormonal balances of other hormones as well.Option D is incorrect since a repeat of the period after 40 days do occur but not on an average scale and indicates stress and diet issues
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About Reproduction
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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