Question

4. All the following are true concerning the chambers and vessels of the heart, except? a. Ventricles are discharging chambers of the heart. b. Left ventricle pumps blood into the pulmonary trunk. c. Right ventricle has walls three times thicker than the wall of the left ventricle. d. Blood enters the right atrium by the inferior vena cava, superior vena cava, and the coronary sinus.

Ask by Carter Schneider. in the United States
Mar 06,2025

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Answer

The left ventricle pumps blood into the aorta, not the pulmonary trunk.

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The Deep Dive

The left ventricle actually pumps oxygenated blood into the aorta, not the pulmonary trunk. The pulmonary trunk is where the right ventricle sends deoxygenated blood towards the lungs for oxygenation. It’s like being at a party where the left ventricle is the DJ sending everyone out onto the dance floor, while the right ventricle is making sure all the partygoers get on the shuttle bus to the 'lung spa' for a refreshing breath of fresh air! The right ventricle does indeed have thinner walls compared to the left ventricle because it only needs to pump blood to the lungs, which are close by, while the left ventricle has a much tougher job of pumping blood all over the body, generating much more pressure. Think of it as the left ventricle being a marathon runner, gearing up for a long, demanding race, whereas the right ventricle is more like a sprinter focusing on a short dash!

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