When oxygenated blood leaves the lungs, it returns to the left atrium of the heart through which vessel(s)? O a pulmonary artery
O b. pulmonary veins
O c. inferior vena cava
O d. bronchial artery

HELP

Oxygenated blood that leaves the lungs returns to the left atrium of the heart through pulmonary veins (option b).

Explanation:

During the minor circulation, the venous blood —charged with carbon dioxide— must pass to the lungs to release this gas and obtain oxygen.

This non-oxygenated blood passes from the left ventricle to the lungs through the pulmonary arteries.  Once the blood has been oxygenated, it returns to the left atrium through the pulmonary veins.

It should be mentioned that the pulmonary arteries are the only arteries to carry non-oxygenated blood, while the pulmonary veins are the only veins to carry oxygenated blood.

The other options are not correct because:

    a. The pulmonary arteries run from the right ventricle to the lungs, with non-oxygenated blood.

    c. The inferior vena cava carries venous blood to the from the lower limbs and abdomen

    d. The bronchial arteria is in charge of perfusing the bronchi.

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there is no options  

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