Question

Sally comes in for her first prenatal examination. this is her first child. she asks you (the nurse), “how does my baby get air inside my uterus?” the correct response is

Answer 1

The placenta provides oxygen to the baby and excretes carbon dioxide into your bloodstream.
 
meaning that the baby does not simply absorb oxygen from a women's bloodstream. blood and gas transports occur through the placenta, also the placenta delivers oxygen-rich blood through the umbilical vein not artery 

hope this helps