What is a testes?

The testes, also known as testicles, are the male reproductive organs that produce sperm and testosterone. They are located in the scrotum, a sac of skin outside the body.

Testicles are composed of seminiferous tubules, which are tiny coiled tubes where sperm is produced. These tubules are lined with Sertoli cells, which provide nutrients and support for the developing sperm cells. The testes also contain Leydig cells, which produce testosterone.

Testosterone is a hormone that is responsible for the development of male characteristics, such as a deep voice, facial hair, and muscle mass. It also plays a role in sexual desire and erectile function.

The testes are controlled by the pituitary gland, which is a small gland located at the base of the brain. The pituitary gland releases hormones that stimulate the testes to produce sperm and testosterone.

The testes are essential for male reproduction. Without them, a man would not be able to produce sperm or testosterone, and would therefore be infertile.