How Does the Heart & Circulatory System Work? (Video)
en español: Video: Corazón
What Does the Heart & Circulatory System Do?
If you've ever wondered how your heart works, this movie has the answer. And special thanks to the Fred J. Brotherton Charitable Foundation for supporting this adventure!
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How the Heart Works
Watch this movie about your heart and circulation - the system that sends blood throughout your body.
