Master Testes with Picmonic for Pre-Health

The testes are the male gonads. They are important components of both the reproductive and endocrine system. The primary functions of the testes are spermatogenesis and production of androgens. Follicle-stimulating hormone (FSH) will stimulate the Sertoli cells, which are located in the seminiferous tubule. Sertoli cells are commonly referred to as “nurse cells” because they nourish and help to develop sperm. The Sertoli cells also secrete inhibin, an enzyme that downregulates FSH synthesis and prevents FSH secretion. Inhibin production by the Sertoli cells is stimulated by androgens. Leydig cells are also found in the testes, and are stimulated by luteinizing hormone (LH). The Leydig cells primarily secrete testosterone, which is responsible for stimulating sexual differentiation of male genitalia in the fetus. Testosterone is also important in maintaining male secondary sex characteristics during and after puberty.