Human Reproduction

• where is FSH made and what does it do?


  • in the brain/pituitary gland
  • stimulates follicle to develop
• where is LH made and what does it do?


  • in the pituitary gland/brain
  • stimulates ovulation
• where is oestrogen made and what does it do?


  • in the ovaries
  • thickens the lining of the uterus
• where is progesterone made and what does it do?

  • in the ovaries
  • it maintains the lining of the uterus
• describe the function of the jelly coat?


  • hardens when the egg is fertilised
  • prevents more than one sperm from entering
• why does the egg cell contain stores of proteins and fats?


  • energy
  • growth of cells
  • protein to make enzymes
• how is an embryo formed from a zygote?


  • mitosis happens and the cells splits into two
  • the cells keep on dividing REPEATEDLY
  • until they form a ball of cells called embryo
  • the cells are genetically identical
• why do menstruating females have diff diets?


  • they need more iron since blood is lost
  • to prevent ANAEMIA
  • iron is needed for the transport of oxygen by RBC
• how does fertilisation occur?


  the nuclei of two gametes fuse
• what is implanted on the uterine wall?


  embryo
• when does ovulation occur 


  14 days before period starts