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Learn about the heart, how it works, and how blood moves around the human body .A person explains how the heart works, what are some parts of the heart and how blood flows in the human body. 

A person explains how the heart works, what are some parts of the heart and how blood flows in the human body. 

How the Heart Works

how-the-heart-works

Let's do English ESL deep listening: focus on meaning. Learn about the heart, how it works, and how blood moves around the human body .A person explains how the…