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How much through veins
Oxygen-poor
blood returns
to the heart
(shown in blue).
blood does a
heart pump?
The average adult human heart
pumps about 10½ pints (5 liters) of
blood every minute, which is the total
amount of blood in a man’s body.
EXTREME PHYSIQUES
When cyclist Miguel Indurain won five
Tours de France in the 1990s, his heart
could pump 106 pints (50 liters) of blood The muscle that
makes up the wall
a minute and his lungs could hold 17 pints of the heart has its
(8 liters) of air. Average adult lungs hold own blood supply.
less than 12¾ pints (6 liters).
US_094_095_309600_ICBT_Heart.indd 94 19/12/17 12:56 pm
