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15 Cards in this Set
- Front
- Back
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prenatal period
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untill birth
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postnatal period
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after birth untill death
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prenatal stage of development
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begins at time of firtilization untill birth of child. 39 weeks
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embryology
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study of development before birth
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zygote
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fertilized ovum
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morula
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about 3 days... a solid mass of cells
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blastocyst
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a hollow ball of cells... embryo reaches uterus
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yolk sack
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provides production of blood cells
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amniotic cavity
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"bag of waters" shock absorbing
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chorion
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develops onto an important fetal membrane in the placenta
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placenta
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provides for exchange of nutrients between mother and baby
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chorionic villi
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connect blood vessels of the chorion to the placenta
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gestation period
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lenght of pregnancy.. 39 weeks
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trimesters
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the three sections of the gestation period
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1st trimester
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1st 3 months..
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