Newborn

Prenatal Development-Baby

By sally_m
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    Weeks 1-2

    None
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    Weeks 3-4

    -Conception
    -Rapid cell division begins
    -Zygote turns into a blastocyst and travels down the fallopian tube
  • Weeks 5-6

    Weeks 5-6

    -Heart, organs, and bones start to form
    -Eyes and ears begin to form
    -Body is 1/6 inch long
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    Weeks 7-8

    -Lungs begin to form
    -Fingers and toes start to form
    -Baby is about 1/2 inch long
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    Week 10

    -All body parts are present
    -Head is half the size of the body
    -Body is 1 1/4 inches long
  • Week 11

    Week 11

    -Teeth buds form
    -Genitals develop
    -Baby is about 2 inches in length and about 1/3 ounce
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    Week 12

    -Fingernails grow
    -Face has a more defined profile
    -About 2 1/2 inches in length and weighs about 1/2 ounce
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    Week 14

    -Baby's sex will become apparent
    -Baby can swallow and make urine
    -Baby is about 3 1/2 inches in length and weighs about 1 1/2 ounces
  • Week 16

    Week 16

    -Baby is moving but mom can't feel it
    -Baby is about 4 1/2 inches in length
    -Baby weighs about 4 ounces
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    Weeks 18-19

    -Baby begins to hear
    -Digestive system begins to work
    -Vernix casease covers the baby
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    Weeks 20-21

    -Regular sleep and wake-up patterns
    -All organs and structures formed
    -Baby is about 6 1/3 inches in length and weighs about 11 ounces
  • Week 22

    Week 22

    -Has nails, fingerprints, eyebrows, lashes, and possibly some hair
    - Heartbeat heart with a stethoscope
    -Baby is about 7 1/2 inches in length and weighs about 1 pound
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    Week 24

    -Wrinkly skin, translucent and pinkish red
    -Lung development
    -Baby is about 8 inches in length and weighs about 1 1/3 pounds
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    Weeks 28-29

    -Baby begins to kick and stretch
    -Eyes begin to partially open and close
    -About 10 inches in length an weighs about 2 1/4 pounds
  • Weeks 31-32

    Weeks 31-32

    -Finished most major development
    -Rapid weight gain begins
    -Baby is about 11 inches in length and weighs about 3 3/4 pounds
  • Week 34

    Week 34

    -Responds to light
    -Skin is pink and smooth
    -Baby is about 12 inches in length and weighs about 4
  • Weeks 36-37

    Weeks 36-37

    -Starts to turn head down to prepare for labor
    -Takes up most of the amniotic sac
    -Baby is about 13 1/2 inches in length and weighs about 6 pounds
  • Weeks 38-40

    Weeks 38-40

    -At week 39, the baby is considered full term
    -Weight gain helps with temperature control once the baby is born
    -Lung development during the last few weeks helps with fewer complications after birth