Male Reproductive Anatomy The reproductive system is the part of
the body involved in sexual function. Below are the main parts
of the male reproductive anatomy. The urethra transports urine
and semen. When you have an orgasm, semen is ejaculated out of
the urethra. The testes are glands that produce sperm
(reproductive cells) and hormones. The epididymis is a coiled
tube that holds sperm while they mature. The vas deferens carry
sperm from the epididymis to the penis. After sexual arousal,
sperm move away from the epididymis through the vas deferens.
Along the way, the sperm mix with fluids produced by the seminal
vesicles and prostate gland to form semen. The semen helps
nourish sperm and carry them along.