Male Reproductive

• Testes


  reproductive cells, produce sperm and testosterone
• Scrotum


  tissue sac, sperm production lower than body temp, close to body when cold, away when hot
• Seminiferous Tubules


  spermatogenesis (making sperm) and coiled tube
• Sertoli Cells


  within tubules, supply nutrients to developing sperm cells
• Interstitial Cells

  found between tubules and produce testosterone
• Head of a Sperm Cell

  nucleus containing DNA, acrosome
• Middle of Sperm

  mitochondria, source of energy
• Tail of Sperm

  motion inable to swim
• Epididymis


  stores immature sperm, located ontop of testis
• Vas Deferen


  connected to epididymis, carries sperm to ejaculatory duct, vasectomy
• Ejaculatory Duct

  control the semen entering into the urethra, carries sperm to penis
• Penis

  deliver sperm to female
• Seminal Vesicles (paired)


  fructose, provides sperm with energy, prostaglandins, helps sperm get to egg
• Prostate Gland(single)


  provides alkaline buffer to acidic vagina
• Cowper's Glands(paired)


  secrete mucus to nutralize semen in urethra from urine
• FSH


  secreted from anterior pituitary, causes spermatigenesis, negative feedback from inhibin
• LH


  secreted from the anterior pituitary, produces testosterone, negative feedback of high levels of testosterone
• Sperm Pathway


  testes, epididymis, vas deferens, urethra