Term
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Definition
| the fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo. Contains about 100 cells |
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Term
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Definition
| the developing human organism from about 2 weeks after fertilization through the second month |
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Term
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Definition
| the developing human organism from 9 weeks after conception to birth |
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Term
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Definition
| agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm |
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Term
| fetal alcohol syndrome (FAS) |
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Definition
| physical and cognitive abnormalities in children caused by a pregnant woman's heavy drinking. In severe cases, symptoms include noticeable facial misproportions. |
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Term
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Definition
| a baby's tendency, when touched on the cheek, to turn toward the touch, open the mouth, and search for the nipple |
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