What is produced by the testes in males that is influenced by testosterone?

The testes are key reproductive organs in males that produce sperm, the male gametes necessary for reproduction. The production of sperm takes place through a process called spermatogenesis, which is influenced by testosterone, a hormone primarily produced by the Leydig cells within the testes. Testosterone plays a crucial role in the development of male reproductive tissues, the maturation of sperm cells, and the maintenance of male secondary sexual characteristics.

Semen, which is the fluid that carries sperm during ejaculation, is a mixture produced by several glands including the seminal vesicles and prostate gland. However, it does not directly result from the action of testosterone on the testes. Likewise, eggs are produced in the ovaries of females, and the placenta is a temporary organ that develops during pregnancy to provide nutrients and waste exchange between the mother and fetus. Thus, sperm is the only option directly produced by the testes under the influence of testosterone.