What is the primary role of follicle-stimulating hormone (FSH) in males?

• A. Promoting sperm production
• B. Stimulating testosterone production
• C. Regulating metabolic rate
• D. Controlling menstrual cycles

Answer: (A)

The primary role of follicle-stimulating hormone (FSH) in males is to promote sperm production, which is essential for male fertility. FSH is produced by the pituitary gland and acts on the Sertoli cells in the seminiferous tubules of the testes. These Sertoli cells support and nourish developing sperm cells during the process of spermatogenesis. By stimulating the Sertoli cells, FSH plays a crucial role in ensuring that sperm cells develop properly and are produced in adequate quantities.

While testosterone production is vital for male reproductive health, it is primarily stimulated by luteinizing hormone (LH), not FSH. FSH's specific action in promoting sperm production highlights its importance in male reproductive physiology. The other options focus on functions that do not pertain to FSH's primary role in males, such as regulating metabolic rate and controlling menstrual cycles, which are more relevant to different hormonal functions or in females.