understanding the male reproductive system the male reproductive system is responsible for producing sperm and is essential for reproduction let's take a closer look at its structure and function the main organs of the male reproductive system are located in the pelvis area they include the testes sperm ducts vast defrin penis and three glands the seminal vesicle prostate gland and bulbo urethal gland the testes are located in a sacklike structure called the scrotum which hangs between the thighs the testes produce sperm which are male sex cells each sperm has a head middle piece and tail the sperm travel through the vast deference to the seminal vesicle and prostate gland where they are mixed with fluids to form semen the semen then passes through the urethra and exits the body through the penis the penis is made of spongy tissue and has two parts the shaft and the glands tip the urethra runs through the penis allowing both seamen and urine to exit the body the testes also produce testosterone a hormone responsible for developing secondary sexual characteristics such as a deep voice muscle development and facial hair during puberty