Male hormones

• What is the focus of section two of key area two?

  Male hormones
• How many male hormones should you know?

  Three
• What aspects of male hormones should you know?

  Where they're produced, their functions, and concentration control
• What do reproductive hormones control after puberty?

  Production of sperm and ova
• What systems are in place regarding gamete production?

  To prevent overproduction or underproduction
• What does FSH stand for?

  Follicle stimulating hormone
• What does FSH do?

  Promotes sperm production in seminiferous tubules
• Where is FSH produced?

  In the pituitary gland
• What does ICSH stand for?

  Interstitial cell stimulating hormone
• What is the role of ICSH?

  Stimulates interstitial cells to make testosterone
• Where is testosterone produced?

  In the interstitial cells
• What is one of the main jobs of testosterone?

  Encourages sperm production in seminiferous tubules
• How does high testosterone affect FSH and ICSH production?

  It inhibits their production in the pituitary
• What happens when testosterone levels drop?

  Inhibition of FSH and ICSH ends
• How does the cycle of hormone production work?

  High testosterone inhibits FSH and ICSH, reducing sperm production
• What analogy is used to describe testosterone regulation?

  Thermostatic control
• What happens when testosterone levels are high?

  FSH and ICSH production is inhibited
• What is the relationship between testosterone and sperm production?

  Testosterone stimulates sperm production
• What are the three male hormones involved in reproduction?

  • FSH (Follicle Stimulating Hormone)
  • ICSH (Interstitial Cell Stimulating Hormone)
  • Testosterone
• What are the functions of the three male hormones?

  • FSH: Stimulates sperm production
  • ICSH: Stimulates testosterone production
  • Testosterone: Stimulates sperm production and inhibits FSH/ICSH
• How does the feedback loop of testosterone work?

  • High testosterone inhibits FSH and ICSH
  • Reduced FSH and ICSH leads to decreased testosterone
  • Cycle continues to maintain balance
• What is the significance of the letters in hormone names?

  • Indicate the hormone's function
  • Often signify pituitary gland origin
• How does the body prevent overproduction of sperm?

  • High testosterone inhibits FSH and ICSH
  • Prevents excessive sperm production