Where does oxygenation of blood take place in the human circulatory system?
a) between pulmonary artery and vein
b) aorta and pulmonary artery
c) vena cava and pulmonary artery
d) aorta and vena cava.
a) between pulmonary artery and vein
b) aorta and pulmonary artery
c) vena cava and pulmonary artery
d) aorta and vena cava.
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answer is (A) between pulmonary artery and vein