L4.2.2: Structure of a Sperm

• Head – GENETIC INSTRUCTION

  ○ Provides genetic instructions.

  ○ Means of penetrating the follicle cell capsule and the oocyte membrane.

  ○ Contains the chromosomal qualities.

  ■ 23 chromosomes

  ○ Acrosome, nucleus, proximal centriole, neck
• Midpiece – ENERGY

  ○ Provides energy for mobility (ATP).

  ○ Mitochondria.
• Tail – MOVEMENT

  ○ Provides for motility

  ○ Propulsion of the cell.

  ○ Axial filament of tail.
• • 1: head
  • 2: neck
  • 3: midpiece
  • 4: tail
  • 5: acrosome
  • 6: nucleus
  • 7: proximal centriole
  • 8: mitochondria
  • 9: axial filament of tail

  A) 1

  B) 2

  C) 3

  D) 4

  E) 5

  F) 6

  G) 7

  H) 8

  I) 9