The Body As A Whole Practice Test

Which chamber pumps oxygenated blood to the systemic circulation?

Right atrium Left ventricle Left atrium Right ventricle

Correct Answer:

Left ventricle

Explanation:

The system that needs to be powered to reach every tissue is the systemic circulation, and the chamber that does that is the left ventricle. It receives oxygenated blood from the left atrium and then ejects it into the aorta, generating the high pressure needed to push blood through the entire body. The thick, muscular wall of the left ventricle reflects this requirement for strong, forceful contractions. In contrast, the right ventricle sends blood to the lungs for oxygenation (pulmonary circulation), the left atrium collects oxygenated blood from the lungs, and the right atrium collects deoxygenated blood from the body. So the left ventricle is the key pump for systemic circulation.

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