ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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S-A Node and Purkinje Fibers
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S-A Node & Cardiovascular Fibers
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A-V Node & Purkinje Fibers
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A-V Node and Cardiovascular 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 excitation signal travels to: Your atria (top heart chambers), telling them to contract. The atrioventricular (AV) node, delaying the signal until your atria are empty of blood. The bundle of His (center bundle of nerve fibers), carrying the signal to the Purkinje fibers.
Detailed explanation-3: -The sino-atrial (SA) node. The atrio-ventricular (AV) node. The bundle of His. The left and right bundle branches. The Purkinje fibres.