1) A person has a total blood volume of 5 L. Of this total, 4 liters is containe
ID: 3518985 • Letter: 1
Question
1) A person has a total blood volume of 5 L. Of this total, 4 liters is contained in the systemic circulation and1 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?- CO-5 L/min, volume 4 L; solve for time. seconds B. how long will it take a drop of blood to go from the right ventricle Volume in pulmonary circuit = 1 L, CO = 5 L/min; solve for time. seconds to the left ventricle? === _Explanation / Answer
The volume of blood flows through the body in 3 circulations namely systemic, pulmonary and coronary.
Assuming the cardiac output= 5L/min
Normal heart beat = 72 beats / min
Stroke volume = 70 ml/ beat.
A. drop of blood leaving to left ventricle to heart is
One cardiac cycle i.e one beat = 0.8 seconds
Average heart beat per minute = 72
Time taken =72×0.8
= 57.6 seconds
(Approximately equal to 1 minute )
In the same way drop of blood from right ventricle to left ventricle is,
Time taken = 12 seconds.
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