Fetal Development Timeline

Timeline created by FRancisco cox
  • Week 7

    Week 7
    Your baby is now about the size of a blueberry. Most of that growth is concentrated in the head as new brain cells are generated at the rate of 100 per minute. Your baby's mouth and tongue are forming as arm and leg buds sprout, and those little kidneys are getting ready to do their job (pee production and excretion). http://www.whattoexpect.com/pregnancy/week-by-week/week-7.aspx
  • Week 10

    Week 10
    He's swallowing fluid and kicking up a storm. Vital organs — including his kidneys, intestines, brain, and liver (now making red blood cells in place of the disappearing yolk sac) — are in place and starting to function, though they'll continue to develop throughout your pregnancy. http://www.babycenter.com/6_your-pregnancy-10-weeks_1099.bc
  • Week 12

    Week 12
    The most dramatic development this week: reflexes. Your baby's fingers will soon begin to open and close, his toes will curl, his eye muscles will clench, and his mouth will make sucking movements. In fact, if you prod your abdomen, your baby will squirm in response. http://www.babycenter.com/6_your-pregnancy-12-weeks_1101.bc
  • week 16

    week 16
    Soon you'll experience one of the most wonderful moments of pregnancy — feeling your baby move. While some women notice "quickening" as early as 16 weeks, many don't feel their baby move until about 18 weeks or more. http://www.babycenter.com/6_your-pregnancy-16-weeks_1105.bc
  • Week 20

    Week 20
    Your baby weighs about 10 1/2 ounces now. He's also around 6 1/2 inches long from head to bottom and about 10 inches from head to heel — the length of a banana. (For the first 20 weeks, when a baby's legs are curled up against his torso and hard to measure, measurements are taken from the top of his head to his bottom — the "crown to rump" measurement http://www.babycenter.com/6_your-pregnancy-20-weeks_1109.bc
  • Week 24

    Week 24
    Your baby's growing steadily, having gained about 4 ounces His body is filling out proportionally and he'll soon start to plump up. His brain is also growing quickly now, and his taste buds are continuing to develop. His lungs are developing "branches" of the respiratory "tree" as well as cells that produce surfactant. http://www.babycenter.com/6_your-pregnancy-24-weeks_1113.bc
  • Week 26

    Week 26
    The network of nerves in your baby's ears is better developed and more sensitive than before. He may now be able to hear both your voice and your partner's as you chat with each other. He's inhaling and exhaling small amounts of amniotic fluid, which is essential for the development. http://www.babycenter.com/6_your-pregnancy-26-weeks_1115.bc
  • week 30

    week 30
    Her eyesight continues to develop, though it's not very keen; even after she's born, she'll keep her eyes closed for a good part of the day. When she does open them, she'll respond to changes in light but will have 20/400 vision. http://www.babycenter.com/6_your-pregnancy-30-weeks_1119.bc
  • Week 33

    Week 33
    The bones in his skull aren't fused together, which allows them to move and slightly overlap, thus making it easier for him to fit through the birth canal. These bones don't entirely fuse until early adulthood, so they can grow as his brain and other tissue expands during infancy and childhood. http://www.babycenter.com/6_your-pregnancy-33-weeks_1122.bc
  • Week 38

    Week 38
    Your baby has really plumped up. She weighs about 6.8 pounds and she's over 19 1/2 inches long. She has a firm grasp, which you'll soon be able to test when you hold her hand for the first time! Her organs have matured and are ready for life outside the womb. http://www.babycenter.com/6_your-pregnancy-38-weeks_1127.bc