The human heart makes 60-80 contrac

The human heart makes 60-80 contractions per minute.
On physical exertion the heart has a short period of rest and the diastole becomes less.
Ten tons of blood are pumped through the heart daily.
The heart acts as a pump
John Floyer,an English doctor, was the first scientist to find out the varying pulse rate in men.

Результаты (английский) 2:

Makes human heart of The 60-80 Contractions The per minute.
The On Physical exertion of the heart has a short period of the rest and the diastole Becomes less See.
Ten tons of blood are Pumped through the heart daily,.
Of The Acts as with a heart pump
the John Floyer, an English doctor, was the first scientist to find out the varying pulse rate in men.