4 February 2016

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The action of a single heart beat

The action of a single heart beat

by Kara Gilbert
When was your last anatomy lesson? The heart is an extraordinary muscle that pumps blood throughout the body, delivering oxygen and nutrients while removing waste. This process happens through a series of rhythmic contractions and relaxations known as the cardiac cycle. Understanding how the heart beats in a single cycle can help you appreciate how this vital organ keeps you alive. Phases of the cardiac cycle The cardiac cycle consists of two main phases: systole and diastole. These terms...

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