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In a normal heart, the electrical impulse resulting in depolarization and contraction of the cardiac muscle originates in the sinoatrial (SA) node and propagates through the atria to the atrioventricular (AV) node before moving on to the ventricles.
When the electrical impulse for muscle contraction is generated, it travels throughout the muscle of each atrium, causing atrial contraction. the impulse then travels to the atrioventricular (AV) node.
according to Medical Assisting- administrative and clinical procedures with anatomy and physiology.
Wiki User
∙ 9y ago
Wiki User
∙ 14y agoIn the sinoatrial node.
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Does the heart have electromagnetic energy?
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