In Utero Development

  • Month ONE

    Zygote implants into uteran lining
  • Period: to

    Human Gestation

  • Becomes a Embryo

    Lasts 2 weeks to 8 weeks; 1/2 inch long and Nervous system develops
  • Month TWO

    Now called a Fetus, heart, head, brain rapidly develop
    Digestive system forms
    1 inch long,
  • Month THREE

    Rapid head growth, bones form, digestive organs function and arms, legs and fingers move spontaniously
    Fetus is 3 inches long and weighs about 1 ounce
  • Month FOUR

    lower body growth rapid
    heartbeat can be heard by Doctor
    sex organs fully formed
    Fetus is 7 inches long and weighs 5 ounces
  • Month FIVE

    Mother feels movement
    Ears and nose begin cartlidge development
    fingernails and toenails appear
    12 inches long and weighs 14 ounces
  • Month SIX

    Eyes and eyelids fully formed
    fat develops under skin
    14 inches long and weighs 2 pounds