Labour and Birth

• Labour: The uterine muscular wall contract and cervix tries to relax, then contractions get more frequent. Contractions cause amniotic membrane to break and release amniotic fluid.
• Expulsion: Powerful Contraction pushes baby out.
• Afterbirth: Placenta is expulsed out. All contraction & pain gone
• Gamete: Sperm

  Size: Smaller

  Mobility: Very mobile – use its tail

  Number: Many more(300,000,000)
• Gamete: Egg

  Size: Larger

  Mobility: Immobile – moved by peristalsis

  Number: Fewer and limited
• Advantages of bottle feeding babies:

  • Less painful
  • Other people can feed baby
  • May contain supplement vitamins and minerals
• Disadvantages of bottle feeding babies:

  • More likely to develop illness
  • Risk of wrong mixture
  • Expensive