Q. The part of fetal circulation which becomes fossa ovalis after birth :

A
Umbilical arteries
B
Ductus arteriosus
C
Foramen ovale
D
Umbilical vein
Solution:

The umbilical arteries supply deoxygenated blood from the fetus to the placenta.
The umbilical vein is a vein present during fetal development that carries oxygenated blood from the placenta into the growing fetus.

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