How many liters of blood are distributed between the pulmona

How many liters of blood are distributed between the pulmonary and systemic circuits in a \"typical\" person? Assume 20% of the blood is in the lungs at any moment. If the cardiac output is 5 L/min, how long will it take a drop of blood to flow from the right ventricle to the left ventricle? show calculation

Solution

A person has 5L total blood volume out of which, 4 liters is present in the systemic circulation and 1 L in the pulmonary circulation. According to the question, blood volume in lungs= 20/100 x 5= 1L.
So, a drop of blood will take= 1L x 1 min/ 5L= 0.2 min= 0.2 x 60 seconds= 12 seconds.