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Question

Which of the following structures are directly involved in the "pulmonary circuit"?

A
Superior vena cava, right atrium, left ventricle
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B
Right ventricle, pulmonary arteries, left atrium
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C
Left ventricle, aorta, inferior vena cava
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D
Right atrium, aorta, left ventricle
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Solution

The correct option is B Right ventricle, pulmonary arteries, left atrium
Pulmonary circulation is the portion of the cardiovascular system which carries deoxygenated blood away from the heart, to the lungs, and returns oxygenated (oxygen-rich) blood back to the heart. In a pulmonary circuit, the oxygenated blood leaves the lungs through pulmonary veins, which returns it to the left atrium.

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