This animation features the heart and circulatory system and how they work. For more information, visit:
► http://www.mayoclinic.com/health/heart-disease/DS01120/?mc_id=youtube
Mayo ClinicHealthcareHealth care
This animation features the heart and circulatory system and how they work. For more information, visit:
► http://www.mayoclinic.com/health/heart-disease/DS01120/?mc_id=youtube
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