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Heartbeat Definition and Explanation PDF | Download eBooks

Learn Heartbeat definition in college biology with explanation to study “What is Heartbeat”. Study heartbeat explanation with college biology terms to review biology course for online degree programs.

Heartbeat Definition:

  • Alternating relaxations and contractions make up the cardiac cycle and one complete cardiac cycle makes one heartbeat.

    Biology by Dr.William George and A.R.Sheikh



Heartbeat Explanation:

Heartbeat is functioned due to the relaxation and contraction of cardiac cycle and the interval completes in one cardiac cycle, responsible for making one heartbeat. A complete cardiac cycle contains two steps: Atria and ventricles and the period that is involved in the whole procedure, named as cardiac diastole. It is believed that in one heartbeat, diastole last almost 0.4 seconds while atrial systole utilize about 0.1 seconds. It is estimated that a normal heart beat of human beats upto 70 time per minute.

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