As a medical professional with expertise in anatomy and physiology, I can provide you with an accurate answer to your question regarding the thickness of the ventricles in the heart.
The
left ventricle is the thickest chamber in the heart. This is because it serves as the major pumping chamber responsible for sending oxygen-rich blood to the entire body through the aorta. The left ventricle must generate a high pressure to overcome the resistance of the systemic circulation, which includes the entire body except the lungs. In contrast, the
right ventricle is thinner as it only needs to pump blood through the pulmonary circulation, which has a lower resistance since it only carries deoxygenated blood to the lungs for oxygenation.
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