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Human Body Study

Male Reproductive System

The organs that produce and deliver sperm, and produce male sex hormones.

Male reproductive system Front-view schematic showing the testes, duct system, accessory glands and penis; each labelled part links to its article. Male reproductive system bladder prostate Accessory glands the seminal vesicles, prostate, and bulbourethralglands, which produce the fluid of semen. Duct system the epididymis (where sperm mature and arestored) and the vas deferens (which carriessperm onward). Penis the organ of delivery; its urethra is sharedwith the urinary system. Testes produce sperm and the hormone testosterone;held in the scrotum, outside the body, for theslightly cooler temperature sperm need. Male reproductive system — schematic front view, not to scale.

Main parts

Section titled “Main parts”
  • Testes — produce sperm and the hormone testosterone; held in the scrotum, outside the body, for the slightly cooler temperature sperm need.
  • Duct system — the epididymis (where sperm mature and are stored) and the vas deferens (which carries sperm onward).
  • Accessory glands — the seminal vesicles, prostate, and bulbourethral glands, which produce the fluid of semen.
  • Penis — the organ of delivery; its urethra is shared with the urinary system.

What it does

Section titled “What it does”

Produces sperm continuously from puberty onward, and delivers them.

Key idea

Section titled “Key idea”

The male system runs continuously, producing sperm in vast numbers throughout adult life — a contrast with the cyclical female system.