What role does Follicle Stimulating Hormone (FSH) play in the male reproductive system?

Follicle Stimulating Hormone (FSH) is essential for the male reproductive system, particularly in regulating sperm production. FSH is secreted by the anterior pituitary gland and acts mainly on the Sertoli cells in the testes. These cells are crucial for the nourishment and development of sperm cells throughout the process of spermatogenesis, which is the formation of sperm.

When FSH binds to its receptors on Sertoli cells, it promotes the production of various factors that are important for the maturation and development of sperm. This includes support for the early stages of sperm development, ensuring that sperm are produced efficiently and in adequate quantities. Therefore, the role of FSH in regulating sperm production is vital for male fertility.

The other roles mentioned in the choices do not accurately describe the function of FSH. While testosterone production is stimulated by Luteinizing Hormone (LH), ejaculation is primarily controlled by neural mechanisms rather than hormonal regulation by FSH. Spermatogenesis is the overarching process that starts with spermatogonia, and while FSH initiates this through its action on the Sertoli cells, its primary role can be more directly assessed as regulating sperm production within that context.