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Within a half an hour after birth, the umbilical arteries and veins close and begin to fibrose; eventually all that will remain are _____

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Anatomy refers to the internal and external structures of the body and their physical relationships, whereas physiology refers to the study of the functions of those structures.


1. Within a half an hour after birth, the umbilical arteries and veins close and begin to fibrose; eventually all that will remain are _____





 
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