Which of the following peptide hormones is released in response to stimulation of pituitary gonadotropes?

Which of the following peptide hormones is released in response to stimulation of pituitary gonadotropes?

(A) ACTH (B) follicle-stimulating hormone
© growth hormone
(D) prolactin
(E) thyroid-stimulating hormone

Explanation:

(B) The pituitary gonadotrophs are cells that secrete the gonadotrophic peptide hormones, follicle-stimulating hormone (FSH), and leutinizing hormone (LH). FSH acts on Sertoli cells of the testis inducing androgen-binding protein synthesis, which maintains a high concentration of testosterone in tubules increasing spermatogenesis. In the ovary, FSH stimulates aromatase activity in the granulose cells stimulating ovum maturation and estradiol production. Pituitary orticotrophs are the ACTH-secreting cells (choice A), somatotrophs secrete growth hormone (choice C), lactotrophs secrete prolactin (choice D), and thyrotrophs secrete thyroid-stimulating hormone (choice E).