Question

How much blood does your heart pump in an hour?

Answer 1

Your heart is an amazing organ. It constantly pumps oxygen and nutrient-rich blood across your body to maintain life. Every minute, or around 2,000 gallons a day, 100,000 times a day this fist-sized powerhouse beats five or six quarts of blood.

Complete answer:
Blood passes from the heart in just one direction. A collection of valves at different openings are stopped from backing up: the tricuspid valve between the right atrium and the right ventricle; the bicuspid valve between the left atrium and the left ventricle; and the semilunar valves in the aorta and pulmonary arteries.

Each heartbeat is split into two stages, or cardiac cycle. In the first step, the tricuspid and mitral valves snap shut, causing the familiar "lub" sound heard in the doctor's stethoscope, a brief burst of ventricular contraction known as the systole. In the second step, a slightly longer period of ventricular relaxation known as the diastole, the pulmonary and aortic valves close up, producing the distinctive dub sound.

Empty, relax, and fill simultaneously, both sides of the heart contract; thus, only one systole and one diastole are felt.

More than 1,500 gallons of pumped blood daily
The heart is a powerful muscle which beats throughout a lifetime without stopping. With each beat, it pumps about 55-80 ml (1/3 cup) of blood for adults and about 25-85 ml per beat for kids. About 6,000-7,500 litres (1,500-2,000 gallons) of blood is pumped daily by an adult heart. The average adult body contains about five quarters of the blood that circulates continuously throughout the body.

Assuming that is an ordinary adult's heart at rest. At 75bpm, 70ml per beat. (BPM = beats per-minute )

70ml . 75bmp = 5250ml in one minute.
5250ml . 60 min = 315000ml per hour
315000ml . 24 hours = 7560000ml per day
So, about 7560 litres/day.

Note: The average heart has a rate of 72 beats per minute, but the rate can be as high as 120 beats in infants and 90 beats per minute in children. An electrical impulse that originates in a small strip of heart tissue known as the sinoatrial (S-A) node, or pacemaker, stimulates each heartbeat.