SHARP EKG Exam Questions and Answers |Fall 2026/2027
Update | 100% Correct
Question 1
What are the two basic kinds of cardiac cells?
Correct Answer
myocardial muscle cells
2. myocardial pacemaker cells
Question 2
What are the 4 primary cell characteristics?
Correct Answer
Automaticity
2. Excitability
3. Conductivity
4. Contractility
Page 1 of 85
,Question 3
What are the two major ions that affect cardiac function?
Correct Answer
sodium
2. potassium
Question 4
What are the primary ions inside the cell?
Correct Answer
Potassium
Question 5
What are the primary ions outside the cell?
Correct Answer
Sodium
Page 2 of 85
,Question 6
Distribution of ions on either side of the membrane is determined by which several factors?
Correct Answer
membrane channels
2. concentration gradient
3. electrical gradient
4. sodium-potassium pump
Question 7
Where is the SA node located?
Correct Answer
In the upper wall of the right atrium/near the inlet of the superior vena cava
Question 8
What is the intrinsic rate of the SA node?
Correct Answer
60-100 bpm
Question 9
Pacemaker cells in the AV junction generate electrical impulses at what rate?
Correct Answer
40-60 bpm
Page 3 of 85
, Question 10
What are the 3 functions of the AV node?
Correct Answer
slow conduction of the electrical impulse through the AV node to allow atria to empty into the ventricles (atrial kick)
2. to serve as a back pack pacemaker
3. protect ventricles from fast rates
Question 11
After the delay in the AV node, where does the impulse go?
Correct Answer
To the bundle of His
Question 12
What is the function of the bundle of His?
Correct Answer
The Bundle of His (AV Bundle) runs from the AV node through the IV septum, splitting into R. and L. branches and
eventually breaking into Purkinje fibers as it spreads through the ventricular walls
Question 13
What is the rate of electrical impulse the Purkinje Fibers have?
Correct Answer
30-40 bpm
Page 4 of 85
Update | 100% Correct
Question 1
What are the two basic kinds of cardiac cells?
Correct Answer
myocardial muscle cells
2. myocardial pacemaker cells
Question 2
What are the 4 primary cell characteristics?
Correct Answer
Automaticity
2. Excitability
3. Conductivity
4. Contractility
Page 1 of 85
,Question 3
What are the two major ions that affect cardiac function?
Correct Answer
sodium
2. potassium
Question 4
What are the primary ions inside the cell?
Correct Answer
Potassium
Question 5
What are the primary ions outside the cell?
Correct Answer
Sodium
Page 2 of 85
,Question 6
Distribution of ions on either side of the membrane is determined by which several factors?
Correct Answer
membrane channels
2. concentration gradient
3. electrical gradient
4. sodium-potassium pump
Question 7
Where is the SA node located?
Correct Answer
In the upper wall of the right atrium/near the inlet of the superior vena cava
Question 8
What is the intrinsic rate of the SA node?
Correct Answer
60-100 bpm
Question 9
Pacemaker cells in the AV junction generate electrical impulses at what rate?
Correct Answer
40-60 bpm
Page 3 of 85
, Question 10
What are the 3 functions of the AV node?
Correct Answer
slow conduction of the electrical impulse through the AV node to allow atria to empty into the ventricles (atrial kick)
2. to serve as a back pack pacemaker
3. protect ventricles from fast rates
Question 11
After the delay in the AV node, where does the impulse go?
Correct Answer
To the bundle of His
Question 12
What is the function of the bundle of His?
Correct Answer
The Bundle of His (AV Bundle) runs from the AV node through the IV septum, splitting into R. and L. branches and
eventually breaking into Purkinje fibers as it spreads through the ventricular walls
Question 13
What is the rate of electrical impulse the Purkinje Fibers have?
Correct Answer
30-40 bpm
Page 4 of 85
