Question

the levels of whiche of these hormones is expected to rise in response to elevated testosterone levels in the blood in males?
estrogen
lh
fsh
inhibin
16 multiple choice 5 points
\the pill\ taken by women as a contraceptive to prevent ovulation contains what?
inhibin
lh and fsh
estrogen and progesterone
testosterone

Explanation:

• First question: In males, elevated testosterone levels lead to negative feedback. Inhibin is involved in the feedback loop of the male reproductive system. When testosterone (produced by Leydig cells, which are stimulated by LH) is high, inhibin (produced by Sertoli cells) can rise as part of the regulatory mechanism to prevent over - production of sperm and excessive testosterone - related effects. Estrogen is mainly a female sex hormone (though males have a small amount, it's not a direct response to elevated male testosterone). LH stimulates testosterone production, so when testosterone is high, LH would be suppressed (negative feedback). FSH is involved in sperm production and its regulation is more related to inhibin in terms of sperm - related feedback rather than a direct response to elevated testosterone like inhibin.
• Second question: Oral contraceptive pills (the pill) usually contain estrogen and progesterone. These hormones work by inhibiting the release of gonadotropin - releasing hormone (GnRH) from the hypothalamus. This, in turn, suppresses the release of luteinizing hormone (LH) and follicle - stimulating hormone (FSH) from the anterior pituitary. Without a proper LH surge, ovulation does not occur. Inhibin is not the main component of the pill. LH and FSH are the hormones that the pill aims to suppress, not contain. Testosterone is a male sex hormone and not used in female contraceptive pills for preventing ovulation.

Answer:

• First question: Inhibin
• Second question: Estrogen and Progesterone