Question

which is a function of the gonadotropic hormones?
multiple choice
19
stimulating the release of follicle - stimulating hormone (fsh) and luteinizing hormone (lh)
inhibiting the release of growth hormone
inhibiting the release of prolactin
inducing the secretion of steroid hormones by the gonads in both males and females
stimulating the release of gonadotropin - releasing hormone (gnrh)

Explanation:

Gonadotropic hormones (FSH and LH) act on the gonads. In males, LH (also called interstitial - cell - stimulating hormone, ICSH) stimulates the Leydig cells of the testes to secrete testosterone (a steroid hormone). In females, LH stimulates the ovarian cells to secrete estrogen and progesterone (steroid hormones). FSH in females stimulates follicular growth and in males, it stimulates spermatogenesis. So, one of the functions of gonadotropic hormones is inducing the secretion of steroid hormones by the gonads in both males and females.

• The first option is incorrect because gonadotropic hormones are FSH and LH. They are not stimulated by themselves.
• Growth hormone release is regulated by growth - hormone - releasing hormone (GHRH) and somatostatin, so the second option is wrong.
• Prolactin release is mainly regulated by dopamine (prolactin - inhibiting hormone), so the third option is incorrect.
• Gonadotropin - releasing hormone (GnRH) stimulates the release of gonadotropic hormones (FSH and LH), not the other way around, so the fifth option is wrong.

Answer:

Inducing the secretion of steroid hormones by the gonads in both males and females