Here's why:
* Production of sperm: The testes are the only organs in the male body that produce sperm, the male gametes necessary for fertilization.
* Production of testosterone: The testes also produce testosterone, the primary male sex hormone that plays a crucial role in male development and reproductive function.
While other organs like the penis and prostate gland are important components of the male reproductive system, they are considered accessory sex organs. They facilitate the delivery and nourishment of sperm but don't produce the sperm itself.
