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What are A and B in order ? What does the looped part represent?

( a ) Pulmonary vein, Pulmonary artery; Pulmonary circulation
( b ) Pulmonary vein, Pulmonary artery; Systemic circulation
( c ) Pulmonary artery, Pulmonary vein; Pulmonary circulation
( d ) Pulmonary artery, Pulmonary vein; Systemic circulation

1 Answer

(C) is the right answer.

The deoxygenated blood pumped into the pulmonary artery is passed on to the lungs from where the oxygenated blood is carried by the pulmonary veins into the left atrium. This pathway constitutes the pulmonary circulation.
answered Mar 26, 2014 by pady_1

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