How do heart valves function?
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How do heart valves function?
How do heart valves function? The heart has four valves that open as one-way gates to allow blood to flow forward through the heart chambers and on to the body. The valves close to prevent blood from flowing backward into the chambers. If you are interested in licensing this video or the heart valve embedded animations, please contact us at www ...
387.7K viewsMar 17, 2017
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