Human Reproductive System

Embryonic Development

Changes in embryo during pregnancy:

  • After one month of pregnancy: Heart is formed.
  • End of second month: Limbs and digits are developed.
  • End of 12 weeks (first trimester): The major organs (limbs, external genital organs etc) are well developed.
  • During 5th month: First movement of foetus and appearance of hair on the head.
  • End of 24 weeks (second trimester): Body is covered with fine hair, eyelids separate and eye lashes are formed.
  • End of 9 months: Ready for delivery
 
 
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