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

Superior vena cava, right atrium, left ventricle

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Right ventricle, pulmonary arteries, left atrium

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Left ventricle, aorta, inferior vena cava

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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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3) The opening of inferior vena cava c) semilunar valve

4) Bet left atrium and left ventricle d) thebesian valve

5) Bet right atrium and right ventricle e) eustachian valves

\begin{matrix} Column I & Column II 1.Right atrium & i. Receives oxygenated blood from the lungs 2.Left atrium & ii. Passes the blood to aorta 3.Right ventricle & iii. Receives deoxygenated blood from the superior vena cava and inferior vena cava 4.Left ventricle & iv. Passes the blood to lungs through the pulmonary artery \end{matrix}

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