2024-2025 West Coast EMT Block Exam #2 with Answers (180 Solved Questions)

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WestCoastEMTBLOCKEXAM#2100% VERIFIEDANSWERS 2024/2025What is the electrical conduction system of the heart?-A network of specialized tissue that is capable of conducting electrical current runsthroughout the heart.-The flow of electrical current causes smooth, coordinated heart contractions.-The contractions produce the pumping action of the heart.-Each mechanical contraction is associated with two electrical processes: 1.Depolarization: electrical charges on the surface of the muscle cell change from positiveto negative 2. Repolarization: the heart returns to its resting state, and the positivecharge is restored to the surface-Electrical impulses begin high in the atria at the sinoatrial node, travel to theatrioventricular node and bundle of His, and then move through the Purkinje fibers tothe ventricles.What are the layers of the blood vessels?Adventitia (outer layer), tunica media (middle layer), tunica (intima) inner layerWhat is the function of the adventitia (outlet layer)?-provides structural support and shape to the vessel

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National Registry of Emergency Medical Technicians

2024-2025 West Coast EMT Block Exam #2 with Answers (180 Solved Questions)

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