Question

contraction of the heart is known as__________ and relaxation as________​

Answer 1

Answer:

In heart. This process is called the cardiac cycle. The period of relaxation is called diastole. The period of contraction is called systole. Diastole is the longer of the two phases so that the heart can rest between contractions

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Answer 2

Answer:

1) Systole

2) Diastole

Explanation:

contraction of the heart is known as systole and relaxation as Diastole.