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ladessa [460]
3 years ago
9

A P E X

Health
1 answer:
elena55 [62]3 years ago
6 0
Confused and engaged. touch, sight, and mind
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a. QRS

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

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