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The human reproductive systemThe male reproductive system

The human reproductive system is different in males and females. When a sperm and egg join, the egg is fertilised and a baby starts to develop. Its mother provides all a baby鈥檚 needs until it is born.

Part of ScienceBody systems

The male reproductive system

The human male contains these parts:

  • glands
  • sperm ducts
  • urethra
  • penis
  • testes
Shows the bladder, glands, penis, sperm duct, urethra, testis, foreskin and scrotum
Figure caption,
The parts of the human male reproductive system. The bladder empties into the urethra but is not part of the reproductive system

Testes

The two (one of them is called a testis) are contained in a bag of skin called the . The testes have two functions:

  • to produce millions of male (sex cells) called
  • to make male sex , which affect the way a man's body develops

Sperm duct and glands

The sperm pass through the , and mix with fluids produced by the . The fluids provide the sperm cells with nutrients. The mixture of sperm and fluids is called semen.

Penis and urethra

The has two functions:

  • to pass urine out of the man's body
  • to pass semen out of the man's body

The is the tube inside the penis that can carry urine or semen. A ring of muscle makes sure that there is no chance of urine and semen getting mixed up.