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0.12 to 0.20 seconds
, The upper chambers of the heart are called _____, and the lower chambers of the heart are
called _____.
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Atria, Ventricles
During which phase does the cell repolarize and the potassium channels close?
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Phase 3
Which coronary artery supplies the SA and AV node in most of the population?
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Right Coronary Artery (RCA)
The heart is a cone-shaped, fist-sized organ positioned on a tilt, with two-thirds of its
mass to the
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