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PMLS 2 Comprehensive Practice Test

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Which structure of the heart delivers oxygen-rich blood to the ascending aorta?
Correct Answer:
Left Ventricle
Explanation:
The left ventricle is the chamber that delivers oxygen-rich blood into the ascending aorta. After blood is oxygenated in the lungs, it returns to the heart and enters the left atrium, moves through the mitral valve into the left ventricle, and then the ventricle contracts to push blood through the aortic valve into the ascending aorta. The left ventricle has a thick muscular wall to generate the high pressure needed to supply the entire systemic circulation. The other chambers handle blood in the right side of the heart or receive blood from the body and lungs, but they do not eject oxygen-rich blood into the ascending aorta.

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