The rhythmic expansion and contraction of heart is called heart beat.
True
False
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3
False
The contraction of heart is called cardiac systole,
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Answer:
false
Explanation:
The contraction of heart is called cardiac systole, whereas expansion or relaxation is called cardiac diastole. We can altogether call it a cardiac cycle. Complete answer: The rhythmic contraction and expansion of the heart is a Cardiac cycle.
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