The top number is the pressure when the heart pumps blood.

In a day, your heart pumps about 2,000 gallons of blood.

A quick surge of music made his heart pump all the harder.

When the heart pumps, the leaflets open one way to allow blood to flow through.

Its tiny heart pumps about 25 quarts of blood each day.

In the 1960s, he developed the first device to help the heart pump.

For blood is still the sap of life and far more mysterious than the heart pump.

"All right, then we can use an auxiliary heart pump during the delivery."

The heart pumps the blood in a single loop throughout the body.

He had to time the shot between heart pumps since his heart rate was way up.