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Which septum is open (allows blood to pass) during the fetal period but closes quickly after birth?
A. interatrial septum
B. all of the above
O C. interventricular septum
D. atrioventricular septum
Cave
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User Vairavan
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1 Answer

1 vote
I think it’s D I don’t know if it’s right or wrong
User Tshirtman
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