Heartbeat The Texas Heart Institute
By A Mystery Man Writer
Description
A heartbeat is a two-part pumping action that takes about a second. As blood collects in the upper chambers (the right and left atria), the heart's natural pacemaker (the SA node) sends out an electrical signal that causes the atria to contract. This contraction pushes blood through the tricuspid and mitral valves into the resting lower chambers (the right and left ventricles). This part []
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Jak się mierzy tętno? Jakie jest prawidłowe tętno?
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The Heart Institute of East Texas – East Texas Senior Living
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per adult (price varies by group size)