Pressure in the aorta is greater than pressure in the pulmonary trunk; therefore,the left ventricle has to generate a greater pressure than the right ventricle in order to eject blood from the heart.

Question

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The aorta carries oxygenated blood to the body at a higher pressure than the pulmonary trunk, which carries oxygen-poor blood to the lungs. As a result, the left ventricle must generate a higher pressure to overcome the resistance of the systemic circulation and pump blood into the aorta, while the right ventricle has a lower pressure requirement to pump blood into the pulmonary trunk.

Pressure in the Aorta Is Greater Than Pressure in the Pulmonary