Which heart chamber receives oxygenated blood and pumps it to the body?

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Question restatement: Which heart chamber receives oxygenated blood and pumps it to the body? The answer choices are: 1) Left atrium, 2) Right ventricle, 3) Left ventricle, 4) Right atrium.

Option 1: Left atrium. The left atrium receives oxygenated blood from the lungs through the pulmonary veins, but it does not pump blood to the body directly. Its main role is to pass blood to the next chamber, the left ventricle, for systemic distribution. So this option describes a receiving role rather than the pumping function to the body.

Option 2: Right ventricle. The right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery for oxygenation, not to the body. This option confuses the destination of blood flow and the oxygenation state.

Option 3: Left ventricle. The left ventricle receives blood from the left atrium and pumps oxygenated blood into the aorta, distributing it to the entire body. This aligns with both components of the question: receiving oxygenated blood and pumping it to the systemic circulation.

Option 4: Right atrium. The right atrium receives deoxygenated blood from the body via the superior and inferior vena cavae and passes it to the right ventricle for sending to the lungs. It does not pump oxygenated blood to the body, so this is not correct for the described function.

Putting the pieces together, the chamber that both receives oxygenated blood and is responsible for its systemic distribution is the one associated with the pumping action into the aorta. The reasoning above shows why the other chambers do not fit the described role, highlighting their actual flows and oxygenation states.

KINE-3030-001 (Fall 2025) Chapter 6

Which heart chamber receives oxygenated blood and pumps it to the body?

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