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Leaving certificate biology

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  1. Ecology theory
    5 Topics
    |
    1 Quiz
  2. Unit 1
    Nutrient recycling
    4 Topics
    |
    1 Quiz
  3. Ecological relationships and population dynamics
    2 Topics
  4. Human impact on the ecosystem
    2 Topics
  5. Study of a grassland ecosystem
    3 Topics
  6. Responses in the Flowering Plant
    4 Topics
    |
    1 Quiz
  7. Unit 3
    Sexual reproduction in the flowering plant
    1 Topic
  8. The human reproductive system
    3 Topics
  9. The menstrual cycle
    2 Topics
  10. Pregnancy
    2 Topics
  11. The circulatory system
    4 Topics
  12. Blood
    5 Topics
  13. The heart
    5 Topics
Lesson 8, Topic 1
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The male reproductive system

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Male anatomy and functions

Testes

  • The function of the testes is to produce sperm and to make the hormone testosterone.

Scrotum

  • Meiosis will not take place at body temperature (37oC). The scrotum maintains a temperature of 35oC so that meiosis can occur and sperm form

Epididymis

  • The epididymis stores mature sperm cells

Sperm ducts

  • Each sperm duct or (vas deferens) transports sperm from the testes to the urethra

Seminal vesicles

  • The seminal vesicles produce seminal fluid. Which causes sperm to start swimming and provides food for them to swim for about two days.
  • The combination of sperm and seminal fluid is called semen

Prostate gland

  • The prostate gland produces seminal fluid which causes sperm to start swimming and provides food for them to swim for about two days.
  • The combination of sperm and seminal fluid is called semen

Cowper’s gland

  • The prostate gland produces seminal fluid. Which causes sperm to start swimming and provides food for them to swim for about two days. the combination of sperm and seminal fluid is called semen

Urethra

  • The urethra is a tube that runs through the middle of the penis. Its functions are to carry sperm (semen) or urine through the penis