The heart beat rate in humans is about 72 times per minute. Is this including the systole and diastole or only the diastole?

Question

anonymous · Answer

Pretty sure its both.

anonymous · Answer

ya or it would be less than 60 times a minute.

anonymous · Answer

The heart rate is counted as how many times the heart beats per unit of time. So when you count it, the heart contracts, then expands, is one beat; then it contracts and expands as the second beat; and so on... I don't think systole or diastole matters here, as they are only different stages of the contraction.

anonymous · Answer

hai 
this is srev98

anonymous · Answer

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anonymous · Answer

what is the meaning of mono zigotic twins in biology?

anonymous · Answer

Identical twins are called mono zygotic twins.