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NREMT Paramedic

Category - Cardiology

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What is the proper term for one heart contraction?

Stroke limit
Stroke weight
Stroke volume
Stroke rate

Explanation

Answer: C - The proper term for one heart contraction is stroke volume. Stroke volume is determined by preload, afterload, and contractile force. The greater volume of the preload is, the more the ventricles are stretched. The greater the ventricles stretch, up to a certain point, the greater the subsequent cardiac contractions. This is referred to as Starling’s law of the heart.

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