Baby

Fetal Devolopment

  • week 4

    week 4

    *Arm and leg buds become visible
    *The eye and ear structures begin to form
    *The heart develops more and beats at a regular rhythm
    *The embryo is 1\4" long
  • week 8

    week 8

    *Eyelids are facial
    The embryo becomes a fetus
    *The skeleton is well formed
  • week 12

    week 12

    the face features are well formed
    tooth buds appear
  • week 16

    week 16

    fetus starts moving around
    bones become harder
  • week 18

    week 18

    the fetus can now hear
  • week 23

    week 23

    fetus is 6-7" long
    eyebrows and eyelashes
  • week 25

    week 25

    eyes open and close
    nervous system is developed
  • week 30

    week 30

    the fetus can suck its thumb
    the bones are fully developed but soft
  • week 33

    week 33

    fetus is 12" long
    weighs 4.5-6 pounds
  • week 40

    week 40

    head hair is thicker
    organs grow stronger
    fingernails reach end of finger tips