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About the Heart and Blood Vessels
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How the Normal Heart Works | Children's Hospital of Philadelphia
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WebMD - The heart is an amazing organ. It pumps oxygen and nutrient-rich blood throughout your body to sustain life. ❤ https://wb.md/3LVDsh3 | Facebook
How Blood Flows through the Human Heart - dummies
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How Your Heart Works - Tests & Procedures - Children's Heart Center - Golisano Children's Hospital - University of Rochester Medical Center
How Does The Heart Pump Blood?
Congenital Heart Defects - How the Heart Works | CDC
Ventricle (heart) - Wikipedia
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Heart chambers: MedlinePlus Medical Encyclopedia Image
