P is the pressure exerted AV is the change in the volume During each heartbeat in the resting condition of a normal human, the left ventricle pumps about 5 liters per minute of blood under an average pressure of 100 mm Hg. The right ventricle pumps the same volume of blood but an average pressure 1/5th that of the left ventricle. a. What is the total average work done by the heart during a single contraction? b. Describe what happens in a diseased heart and compare the work done for each heartbeat to a normal heart.

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