The male reproductive system consists of:
- the testis
- the duct system, which is made up of the epididymis and the vas deferens
- the accessory glands, which include the seminal vesicles and prostate gland
- the penis
The testes produces and stores sperms and secretes testosterone.
The vas deferens is a muscular tube that passes upward alongside the testicles and transports the sperm-containing fluid called semen.
The epididymis is a set of coiled tubes (one for each testicle) that connects to the vas deferens.
The epididymis and the testicles hang in a pouch-like structure outside the pelvis called the scrotum. This bag of skin helps to regulate the temperature of testicles, which need to be kept cooler than body temperature to produce sperm.
The accessory glands, including the seminal vesicles and the prostate gland, provide fluids that lubricate the duct system and nourish the sperm.
The seminal vesicles are sac-like structures attached to the vas deferens to the side of the bladder.
The prostate gland produces some of the parts of semen.
The urethra is the channel that carries the semen to the outside of the body through the penis. The urethra is also part of the urinary system because it is also the channel through which urine passes as it leaves the bladder and exits the body.
The penis is the copulatory organ for transfering sperms to the female reproductive tract.