| A | B |
|---|
| Amnion | Amniotic Sac |
| Amnion | A second membrane that forms from the chorion during the second week and is the innermost layer that surrounds the developing embryo. |
| Amniotic Fluid | the fluid that fills the amniotic sac and surround the embryo |
| Umbilical Cord | a 22” Flexible cordlike structure that contains two arteries and one vein which connects the fetus to the placenta. |
| Yolk Sac | Develops during the second week. It produces the stems cells of the bone marrow which make the blood cells and gives rise to cells that later become sex cells. |
| Molar Pregnancy | When tumors grown instead of a baby |
| Fetal Stage | 3-9 Months |
| Fetal Stage | growth is rapid and body proportions change considerably |
| 3rd Month | Arms, hands, fingers and toes are fully formed Fingernails, toenails, and external ears are beginning to develop |
| 4th Month | Heart beat can be heard Eyelids, eyebrows, eyelashes, nails and hair are formed |
| 5th Month | May begin to feel the baby move Baby is developing and exercising muscles |
| Lanugo | a fine hair that is covering the shoulders, back, and temples |
| Vernix Caseosa | white coating that covers the baby’s skin and protects it from the long exposure of the amniotic fluid. |
| 6th Month | Finger and Toeprints are visible Eyes open Baby responds to sound by motion or increase in pulse |
| 7th Month | Amniotic fluid begins to diminish Reserves body fat Hearing is fully developed |
| 8th Month | Brain is developing rapidly Baby can see and hear perfectly |
| 9th Month | Lungs fully developed Reflexes are coordinated Can blink, close eyes, turn head, grasp firmly |
