MALE REPRODUCTIVE SYSTEM

• Penis - male organ for sexual intercourse, reproduction and urination
• 2 parts of penis

  • Glans: the head of the penis
  • Shaft: from the ridge of the glans to the scrotum
• Foreskin - covers the glans at birth
• Circumcision - removal of foreskin

  1. hygienic reasons
  2. religious reasons
• 2 states of the penis

  • Flaccid - soft and limp
  • Erect - hard and enlarges – erection
• Urethra - the tube that carries semen (sperm & fluids) and urine out of the body, but not at the same time a passageway for semen and urine
• Meatus – outside opening of the urethra
• Testes – Testicles - two oval shaped glands that produce sperm and testosterone
• Scrotum - sac of skin that contains the testes just beneath the penis and regulates temperature for the sperm to reproduce
• Epididymis - network of tubes where sperm mature and are stored temporarily; located behind each testicle
• Vas deferens - tubes that go from the epididymis to the urethra ; a passageway for sperm
• Semen – the mixture of sperm and fluids
• Seminal vesicle - two glands on either side of the bladder that secrete a fluid (seminal fluid), that combines with sperm in the vas deferens; seminal fluid provides nourishment to sperm
• Prostate gland - gland near the bottom of the bladder; it forms a milky fluid that combines with sperm and seminal fluid in the vas deferens keeps sperm alive
• Cowper’s gland - a pair of small glands that secrete a mucous substance that adds to semen to neutralize the urethra
• Sperm - male reproductive cell
• 3 parts of sperm:

  head contains DNA chromosomes

  neck supplies energy and nutrients

  tail provides mobility
• Ejaculation - the action that forces semen through the urethra & out of the body
• Hernia - when an internal organ pushes against or through a surrounding cavity wall
• MRS Parts

  A) Bladder

  B) Urethra

  C) Penis

  D) Scrotum

  E) Testicle

  F) Epididymis

  G) Vas deferens

  H) Cowper's Gland

  I) Prostate Glands

  J) Seminal Vesicle

  
• External organs

  • Scrotum
  • Testes
  • Penis
• Internal organs

  • Vas deferens
  • Seminal vesicles
  • Prostate glands
  • Cowper’s glands
  • Urethra
• 1. Sperm is produced in the testes
  2. Move into epididymis where they mature
  3. Travel through vas deferens
  4. Into the urethra
  5. Through the tip of the penis …. meatus