The amount of blood pumped by the heart per minute is

2 litres

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3 liters

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5 litres

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4 litres

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Solution

The correct option is C 5 litres
The amount of blood pumped by the heart per minute is called the cardiac output.
The heart of a normal person beats 72 times per minute. This is called the heart rate. During each and every heartbeat, the ventricles pump about 70 ml of blood.
This is known as stroke volume. This means heart pumps 72 x 70 ml = 5040 ml or approximately 5 liters of blood per minute.
Thus the correct answer is option C.

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The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of 150 $m m$ of mercury. If the density of mercury is $13.6 \times 10^{3} k g / m^{3}$ and $g = 10 m / s^{2}$ , then the power of heart in Watts is

Q. The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of 150

m m

of mercury. If the density of mercury is

13.6 \times 10^{3} k g / m^{3}

and

g = 10 m / s^{2}

, then the power of heart in Watts is

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