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Order the steps involved in conveying an impulse from the atrium to the ventricl

ID: 3513531 • Letter: O

Question

Order the steps involved in conveying an impulse from the atrium to the ventricles in the heart's electrical conduction system.

SA node fires

      [ Choose ]            Step 5            Step 4            Step 3            Step 1            Step 2      

AV node fires

      [ Choose ]            Step 5            Step 4            Step 3            Step 1            Step 2      

Signal travels through Bundle of His

      [ Choose ]            Step 5            Step 4            Step 3            Step 1            Step 2      

Signal travels through R/L interventricular bundle branches

      [ Choose ]            Step 5            Step 4            Step 3            Step 1            Step 2      

Signal travels through Purkinje Fibers

      [ Choose ]            Step 5            Step 4            Step 3            Step 1            Step 2      

Explanation / Answer

SA node fires : Step 1

AV node fires : Step 2

Signal travels through Bundle of His : Step 3

Signal travels through R/L interventricular bundle branches : Step 4

Signal travels through Purkinje Fibers : Step 5

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