11.5.2 What are the parts of the male reproductive system?

Last updated at July 3, 2026 by

💡 A cooler workshop

Sperm are so heat-sensitive that the body keeps their factory — the testes — slightly outside, in a pouch that stays a little cooler than the rest of us.

What are the parts of the male reproductive system?
Male Reproductive System Testes — make sperm; kept cool in the scrotum Vas deferens — carries sperm to the urethra Seminal vesicles, prostate — add fluids Penis — passes sperm into the female body
  • Testes (in the scrotum) produce sperm and a hormone; the scrotum keeps them slightly cooler than body temperature.
  • Sperm travel through the vas deferens , which opens into the urethra , a common passage for urine and sperm.
  • The seminal vesicles and prostate add fluids to nourish the sperm; each sperm has a head with genetic material and a long tail to swim.
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