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kherson [118]
3 years ago
10

Proper sleep hygene makes it easier for you to engage in physical activity. True Flase

Health
2 answers:
liberstina [14]3 years ago
8 0

Answer: true

Explanation:

KIM [24]3 years ago
6 0

Answer:

true

Explanation:

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a. QRS

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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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The QRS complex represents the time necessary for the impulse to travel through the bundle of His, the bundle branches, and the Purkinje fibers to complete ventricular activation or contraction, known as ventricular depolarization. QRS is simply a combination of the Q-wave, R-wave and the S-wave which represents electrical impulses.

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