What is the name of the external sex organ in males?

The male external sex organ is called the penis. It serves multiple functions, including playing a crucial role in sexual intercourse and urination. The structure of the penis allows it to become erect, facilitating penetration during sexual activity. The penis is also part of the male reproductive system, and it is involved in the delivery of sperm into the female reproductive tract.

In contrast, the scrotum serves a different purpose, functioning to house and protect the testes while also regulating their temperature, which is vital for sperm production. The prostate is a gland located below the bladder that contributes to seminal fluid production but is not an external organ. The testes are the male reproductive organs responsible for producing sperm and testosterone, but they are located internally and not considered an external sex organ. This distinction highlights why the penis is identified specifically as the external sex organ in males.