West Coast EMT Block 2 Exam Question and answers rated A+ 2023/2024
West Coast EMT Block 2 Exam Question and answers rated A+ 2023/2024Electricity of the heart - correct answer First, depolarization: the electrical charges on the surface of the muscle cell change from positive to negative Second, repolarization: the heart returns to its resting state and positive charge is restored to the surface Beginning in the high atria at the sinoatrial node, then travels to the atrioventricular node, moves through to the Purkinje fibers to the ventricles. This movement produces a smooth flow of electricity through the heart which depolarizes the muscle and produces a coordinated pumping contraction tunica media - correct answer middle layer of the artery where smooth muscles are found that can
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