Which of the following vessel carries most of the oxygenated blood?
A
Pulmonary artery
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B
Pulmonary vein
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C
Coronary artery
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D
Cerebral artery
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Solution
The correct option is B Pulmonary vein During the cardiac cycle in humans, the blood pumped by the right ventricle enters the pulmonary artery, whereas the left ventricle pumps blood into the aorta. The deoxygenated blood pumped into the pulmonary artery is passed onto the lungs from where the oxygenated blood is carried by the pulmonary veins into the left atrium. This pathway constitutes the pulmonary circulation. The pulmonary vein carries most oxygenated blood in the body.