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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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Soren Soren
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9 years ago
The yolk sac 
A)   produces blood cells until the developing liver, spleen, and bone marrow are mature enough to take over this function.
B)   forms a membrane that encloses the developing organism.
C)   helps keep the temperature of the prenatal world constant.
D)   provides a cushion against any jolts caused by the mother’s movement.
Textbook 
Child Development

Child Development


Edition: 9th
Author:
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SuperionSuperion
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9 years ago
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Soren Author
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#2
9 years ago
Very nice of you to have taken the time to answer my question.
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#3
9 years ago
Mark as solved, don't forget Slight Smile
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