Anatomy and Physiology II Practice Test

FSH, or Follicle-Stimulating Hormone, plays a crucial role in the reproductive system, particularly in the development of ovarian follicles in females. This hormone is produced by the anterior pituitary gland and is essential for the processes of gametogenesis—the formation of eggs in females.

During the first half of the menstrual cycle, FSH levels rise and stimulate the growth and maturation of ovarian follicles, which contain the developing eggs. As the follicles grow, they produce estrogen, which further supports the development of the follicles and prepares the uterus for a potential pregnancy. Thus, the action of FSH is fundamental in initiating and promoting the primary stages of follicular development.

In contrast, luteinizing hormone is involved in the later stages of follicle development and the triggering of ovulation, not its formation. Estrogen and progesterone have specific roles in regulating the menstrual cycle and maintaining pregnancy but do not directly stimulate the formation of egg follicles.