A person has a total blood volume of 5 L. Of this total, 4 liters is contained in the systemic circulation and 1 L in the pulmonary circulation. If the person has a cardiac output of 5 L/min:
A. how long will it take for a drop of blood leaving the left ventricle to return to the heart?
B. how long will it take a drop of blood to go from the right ventricle to the left ventricle?
A. SV = 5 L/min, volume = 4 L, which would be distributed in 4/5 min = 48 seconds.
B. Volume in the pulmonary circuit = 1 L, which would require 1/5 min, or 12 seconds to return to the left atrium from the right ventricle.
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