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The double-pump function of the heart includes the right side, which serves as the __________ circuit pump and the left side, which serves as the ________ circuit pump.
The folds of fibrous tissue that ensure a one-way flow of blood from the atria into the ventricles are the_______?
The portion of the pericardial membrane that lies on the surface of the heart is the _______?
The layer of the heart wall that contains cardiac muscle tissue, blood vessels, and nerves is the _______?
the correct sequential path of a normal action potential in the heart is _____?
SA node to AV node to AV bundle to bundle branches to Purkinje fibers
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