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Fetal Development!


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Fetal Development!

  1. 1. How the baby grows, week by week.
  2. 2. Week One <ul><li>Division of the embryo begins. The embryo reaches the uterus on the third day. </li></ul>
  3. 3. Week 2 <ul><li>The fertilized egg divided into three layers and extraembryonic membranes. The embryo secretes Human Chorionic Gonadotropin which is the basis for the pregnancy test. </li></ul>
  4. 4. Weeks 3 <ul><li>The nervous system makes its appearance. The development of the heart also begins this week. The heart begins pumping and circulating the blood. </li></ul>
  5. 5. Weeks 4-5 <ul><li>The umbilical cord completes its development. The arms, legs, eyes, ears, and nose start to develop. </li></ul>
  6. 6. Week 6-8 <ul><li>This is when the embryo becomes easily recognizable as human. </li></ul>
  7. 7. Months 3-4 <ul><li>Eyelashes, eyebrows, hair on head, fingernails, and nipples appear. Bones begin to replace softer tissue. It becomes possible to distinguish the sex of the baby. The fetal heartbeat is able to be heard with a stethoscope on the mother’s abdomen! </li></ul>
  8. 8. Months 5-7 <ul><li>The mother begins to feel movement. Lanugo (fine hair) covers the fetus. The fetus is also covered by a substance called vernix which is thought to protect the delicate skin. </li></ul>
  9. 9. Months 8-9 <ul><li>The fetus continues to refine its development so it can thrive outside the womb. </li></ul>