Male Reproductive system

• Reproductive system - biological system made up of anatomical organs in sexual reproduction.
• Sperm best temperature?

  35 celsius
• scrotum - regulates the temperature of the testes
• Penis - deposits the sperm into the vagina during mating.
• Scrotum - hangs behind the penis and contains testicles, it is the climate control system for the testes.
• Testis - responsible for making testosterone and producing sperm cells
• Epididymis - coiled tube that rests on the backside of each testicles. it carries, stores, and brings the sperm into maturity.
• What are the external structures of male reproductive system?

  • Penis
  • Scrotum
  • Testis
  • Epididymis
• Vas deferens - tube that transports mature sperm to the urethra in preparation for ejaculation.
• Ejaculatory duct - link or fusion of the vas deferens and seminal vesicles.
• Urethra - carries urine from the bladder outside the body. passageway of urine and semen
• Seminal Vesicle - produce sugar (fructose) that provides the sperm with energy and motility.
• fructose - serves as the energy of sperms
• Prostate glands

  • walnut-like structure
  • contributes additional fluid for the sperms
• Cowper's gland

  • Also called Bulbourethral gland
  • produce clear, slippery fluid that empties directly into the urethra.
  • This fluid serves as lubrication that neutralizes the acidity from residual drops of urine in the urethra
• What are the internal structures of the male reproductive system?

  • Vas deferens
  • Ejaculatory duct
  • Urethra
  • Seminal vesicles
  • prostate gland
  • cowper's gland
• Hormones

  • chemical messengers of the body
  • important for maintaining homeotasis
• spermatogenesis - process which sperm cells production occur
• How long is the sperm?

  0.06 mm
• sperm cell shape?

  tadpole-shaped cell
• Head - part of sperm cell that contains a compact nucleus with the genetic material
• Flagella - part of sperm cell that allows the sperm to move and gets atp from mitochondria in the midpiece
• Characteristics of semen

  • ph - 7.2 to 7.6
  • Normal discharge - 2 to 6 ml per ejaculation (average - 2.75ml)
  • Sperm count - 50 - 130 million (average - 66 million/ml ) 180 million total
• Characteristics of Semen

  • Morphology - <35% are abnormal
  • Motility - 60% exhibit forward motility
• How many hours do sperm cell survive after ejaculation into the female?

  24 - 72 hours