Question

In which of the following locations pO2 is more than 40 mm Hg?
(a) Systemic veins
(b) Pulmonary vein
(c) Systemic arteries
(d) Pulmonary artery
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Answer 1

Answer:

pulmonary vein is right option because in alveoli PO2 is 104 mm of Hg and this pure blood carry pulmonary vein

Answer 2

Option (b) pulmonary vein      

Explanation:

• Pulmonary vein are the veins which carries oxygenated blood  from lungs to left auricle of heart and then left auricle passes to left ventricle and then this oxygenated blood is transported from here to aorta through systematic arteries to all body part . From there deoxygenated blood is taken away by systematic veins to vena cava to right auricle and than from right auricle to right ventricle and the cycle stars again.

• Pulmonary veins carries partial pressure of oxygen: 104 mm hg.