Spermatogenesis

• Label this diagram of the testis

  A) vas deferens

  B) epididymis

  C) seminiferous tubules

  D) interstitial tissue

  
• Label this diagram of the process of spermatogenesis.

  A) germinal epithelium (2n)

  B) seminiferous tubules

  C) mitosis

  D) spermatogonia (2n)

  E) mitosis

  F) primary spermatocyte (2n)

  G) meiosis I

  H) secondary spermatocyte (n)

  I) meiosis II

  J) spermatids (n)

  K) differentiation (spermiogenesis)

  L) spermatozoa (n)

  
• What occurs in spermiogenesis?

  • decrease in volume of cytoplasm
  • form the flagellum
  • form the acrosome
• What are the different cells in spermatogenesis?

  • germinal epithelium
  • spermatogonia
  • primary spermocyte
  • secondary spermocyte
  • spermatid
  • spermatozoa
• Label this diagram of a cross section of a testis.

  A) sertoli cell

  B) leydig cells

  
• Where are sertoli cells and what do they do?

  • within the seminiferous tubule
  • they nourish and protect developing sperm cells from the immune system
• Where are leydig cells and what do they do?

  • between seminiferous tubules
  • they secrete testosterone
• Where does spermatogenesis occur?

  The seminiferous tubules
• Where are spermatogonia produced from?

  The germinal epithelium