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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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snowhite snowhite
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8 years ago
In human embryos, the yolk sac is important because it
A) stores yolk.
B) gives rise to earliest blood cells and blood vessels.
C) allows for gas exchange through the placenta.
D) stores nitrogenous wastes.
Textbook 
Human Anatomy

Human Anatomy


Edition: 7th
Authors:
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WideEyesWideEyes
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8 years ago
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snowhite Author
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8 years ago
Correct Face with Stuck-out Tongue
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8 years ago
Good luck on your exam, snowhite!
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