Question

In a normal human adult (at resting position), how much blood does the heart pump per minute?
A) 5 litre
B) 3 litre
C) 1 litre
D) 7 litre

Answer 1

The heart beats 70 times per minute, pumping 60 to 90 millilitres of blood out of the heart with every beat.

Complete answer:
First we should know about the roles of heart to answer this question. The heart is the primary blood pumping station of the body. Its purpose is to inject blood cells into the lungs to absorb oxygen, and then pump those blood cells throughout the body, providing oxygen. Heart fills up with blood when it is relaxed. It pumps the blood back out and into the body when it contracts.
Now, let us find the solution from the options-
An adult heart at rest pumps about 5 litres of blood a minute. But sometimes the heart can pump 3-4 times as much during exercise to ensure that our body gets adequate oxygen and fuel. In a single minute, a hurt pump will move 5 litres of blood and 7600 litres (2000 gallons) every day.
From this we came to know that options B, C, and D are incorrect.

Thus, the correct answer is option A 5 litre.

Note: Heart pumps over 2.5 billion times in a lifetime and pumps over 200 million litres of blood. Infants have a heartbeat that is definitely faster than the normal human and their heart beats 120 times a minute. The heart rate would also be increased by athletic exercises.