BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
CARDIOVASCULAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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sinoatrial node, purkinje fibers, atrioventricular node, atrioventricular bundles
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atrioventricular node, atrioventricular bundle, sinoatrial node, purkinje fibers
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sinoatrial node, atrioventricular node, atrioventricular bundles, purkinje fibers
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sinoatrial node atrioventricular bundles, atrioventricular node, purkinje fibers
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Detailed explanation-1: -The SA node (physiologicalpacemaker) starts the sequence by generating an electrical impulse, causing the atrial muscles to contract. From there, the signal travels to the AV node, then through the bundle of His, down the bundle branches, and through the Purkinje fibers, causing the ventricles to contract.
Detailed explanation-2: -The SA node starts the sequence by causing the atrial muscles to contract. That’s why doctors sometimes call it the anatomical pacemaker. Next, the signal travels to the AV node, through the bundle of HIS, down the bundle branches, and through the Purkinje fibers, causing the ventricles to contract.
Detailed explanation-3: -Name the cardiac conduction cycle events in order: The electrical impulse is initiated at the SA node. The impulse passes to the AV node, which is passed on the the AV bundle. The impulse is transmitted to the Purkinje fibers and the ventricles contract.