Encceja Ensino Fundamental Practice Questions - Exame Nacional Para Certificação De Competências De Jovens E Adultos - Ensino Fundamental Exam

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The human cardiovascular system is a closed double-circulation network driven by the heart. Which chamber of the heart receives oxygenated blood returning from the lungs, and which chamber pumps this oxygen-rich blood through the aorta to the rest of the body?

The left atrium receives oxygenated blood from the pulmonary veins, and the left ventricle pumps it out through the aorta. The right atrium receives oxygenated blood from the vena cava, and the right ventricle pumps it to the aorta. The left ventricle receives oxygenated blood directly from the trachea, and the right atrium pumps it to systemic tissues. The right ventricle receives oxygenated blood from the lungs, and the left atrium pumps it to the brain.

Correct Answer:

The left atrium receives oxygenated blood from the pulmonary veins, and the left ventricle pumps it out through the aorta.

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