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Prenatal Development ~ Baby

By AspenJames88
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    Weeks 1/2

    Baby is just conceived. Baby has no development. No changes occur here.
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    Weeks 3/4

    The zygote turns into blastocysts. Travels through the Fallopian tubes. Rabid cell division and by week 4 baby turns to an embryo.
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    Weeks 5/6

    Brain and spinal cord forms. Heart , Organs , and bones form. Eyes and ears begin to form.
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    Weeks 7/8

    The brain and face begin to grow. The 4 chamber heart- lungs begin to form. Fingers and toes being to form.
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    Week 10

    Head is half the size of the baby. All body parts are presented. Baby is 1 1/4 inches long.
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    Week 11

    Genitals develop. Head is about half the length of the baby. Teeth buds form.
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    Week 12

    Fingernails grow. Face has a defined profile. About 2 1/2 inches in height.

  • Week 14

    Week 14
    Baby sex becomes apparent. Baby can swallow and make urine. Baby is about 3 1/2 inches.

  • Week 16

    Week 16
    The baby is moving but the mom cannot feel it. Baby is about 4 1/2 inches long. The baby weighs about 4 ounces.
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    Weeks 18-19

    The baby begins to hear. The digestive system starts to work. Vernix caseosa covers the baby.
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    Weeks 20-21

    Baby starts to have a regular sleep and wake schedule. The baby may start sucking it's thumb. All organs are formed.

  • Week 22

    Week 22
    Has nails, fingerprints, eyebrows, lashes, and possible some hair. The baby is more active. Heartbeat can be heard with a stethoscope.

  • Week 24

    Week 24
    The baby will have wrinkly, translucent and light pink skin. Lung development. Regular sleep schedules

  • Weeks 29-29

    Weeks 29-29
    Eyes begin to open partially. Lungs are capable of breathing. Baby begins to kick

  • Weeks 31/32

    Weeks 31/32
    Baby has finished most development. Rapid weight gain. Langue starts to fall off.

  • Week 34

    Week 34
    Fingernails continue to grow. Responds to light. Skin is pink and smooth

  • Weeks 36/37

    Weeks 36/37
    Takes up most of the amniotic sac. Head starts to turn down and prepare for labor. Baby is about 13 1/2 inches long.

  • Weeks 38/40

    Weeks 38/40
    Major Organs are still in it's last development stages. Brain will double in size. Lung development will continue to prevent complications during birth.