Question 41 pts Order the steps involved in conveying an impulse from the atrium
ID: 3513530 • Letter: Q
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Question 41 pts
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
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Question 51 pts
Normally the highest amplitude wave on the ECG is the ________. It represents ________ depolarization.
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Question 61 pts
A PR interval longer than 0.2 seconds may indicate
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Question 71 pts
Which interval is commonly used to calculate the heart rate?
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Question 81 pts
In this lab, three ECG electrodes will be placed on the body, forming Einthoven's Triangle. In this type of ECG, the electrodes are placed as follows:
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Question 91 pts
The V2-V1 function on LabScribe will measure ECG wave
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Question 101 pts
In the last exercise of the lab, the event marker is used to
P wave; ventricularExplanation / Answer
41. SA node, Bundle of his, AV node, interventricular node, purkinje fibers.
51. QRS complex is of highest amplitude and it represents ventricular depolarization.
61. PR interval of 0.2 to 0.5 seconds indicate first degree block.
71. R-R interval is used to calculate heart rate.
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