Question

Ovulation in mammals occurs mainly under the influence of

• A. TSH and ACTH
• B. FSH and LH
• C. TSH and STH
• D. MTH and ACTH

Answer 1

The correct option is B FSH and LH

Gonadotropin-releasing hormone (GnRH) is secreted by the hypothalamus and stimulates the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary gland.

FSH initiates follicular growth and the secretion of estrogens by the growth follicles.

LH stimulates the further development of ovarian follicles and their full secretion of estrogens, brings about ovulation, promotes the formation of the corpus luteum and stimulates the production of estrogens, progesterone, relaxin and inhibin by the corpus luteum.