The best reason known for the initiation of puberty in female is:
Correct answer: B. Hypothalamus releases FSH-RF to stimulate pituitary gland to release FSH to start menstrual cycles
- A. Hypothalamus becomes insensitive to feedback inhibition by estrogen
- B. Hypothalamus releases FSH-RF to stimulate pituitary gland to release FSH to start menstrual cycles
- C. The timing of the first ovulation, or menarche, was pre-set by increased androgen secretion way back in pre-natal development
- D. Both (A) and (B) are correct
Explanation
This option combines the aspects of both options A and B. Option A highlights the role of the hypothalamus becoming less sensitive to estrogen feedback, while Option B describes the release of GnRH from the hypothalamus to stimulate the pituitary gland to release FSH and LH. Both are important components of the initiation of puberty.
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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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