What is the anterior pituitary hormone that regulates spermatogenesis in males?

The anterior pituitary hormone that regulates spermatogenesis in males is follicle-stimulating hormone (FSH). FSH plays a crucial role in the male reproductive system by stimulating Sertoli cells in the seminiferous tubules of the testes. These cells are essential for supporting and nurturing the developing sperm cells during the process of spermatogenesis, which is the production of sperm.

FSH not only promotes the division and maturation of germ cells but also influences the secretion of inhibin, a hormone that provides negative feedback to the pituitary gland to help regulate FSH levels. By controlling the environment vital for sperm development, FSH is integral to male fertility.

In contrast, luteinizing hormone (LH) primarily stimulates testosterone production from Leydig cells in the testes, which is also important for male reproductive functions but does not directly regulate spermatogenesis. Testosterone supports sperm maturation indirectly and is essential for the overall development of male secondary sexual characteristics. Prolactin is involved in lactation and reproductive functions but does not have a significant role in regulating spermatogenesis.