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1 Copyright © 2017 Pearson Education, Inc.Basic Arrhythmias, 8e (Walraven) Chapter 1 Electrophysiology 1) The inherent rate of the SA node is ________ bpm.
A) 30-60
B) 40-60
C) 60-100
D) 100-120
Answer: C
Page Ref: 6
Learning Obj.: 1.3
2) The inherent rate of the AV junction is ________ bpm.
A) 20-40
B) 40-60
C) 60-100
D) 100-120
Answer: B
Page Ref: 6
Learning Obj.: 1.3
3) The inherent rate of the ventricle is ________ bpm.
A) 20-40
B) 40-60
C) 60-100
D) 100-120
Answer: A
Page Ref: 6
Learning Obj.: 1.3
4) The built-in rate of each of the three major areas of the conduction system is referred to as the ________ rate.
- fast
- heart
- escape
- inherent
Answer: D
Page Ref: 6
Learning Obj.: 1.3
Basic Arrhythmias, 8e Gail Walraven (Test Bank All Chapters, 100% Original Verified, A+ Grade) 1 / 4
2 Copyright © 2017 Pearson Education, Inc.5) What term is used to refer to the process of electrical discharge and the flow of electrical activity?
- Repolarization
- Depolarization
- Polarization
- Polarized
Answer: B
Page Ref: 4
Learning Obj.: 1.2
6) If polarizing is considered the ready state, then ________ would be considered the recovery state.
- discharge
- polarization
- repolarization
- depolarization
Answer: C
Page Ref: 4
Learning Obj.: 1.2
7) After leaving the area of the AV node, impulses go through the ________ to reach the right and left bundle branches.
- Purkinje fibers
- Bundle of His
- AV junction
- SA node
Answer: B
Page Ref: 6
Learning Obj.: 1.3
8) Part of the parasympathetic branch of the autonomic nervous system is the ________ nerve.
- vagus
- coronary
- aortic
- pericardial
Answer: A
Page Ref: 10
Learning Obj.: 1.4
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3 Copyright © 2017 Pearson Education, Inc.9) When stimulated, the ________ branch of the nervous system increases heart rate, AV conduction, and irritability.
- parasympathetic
- sympathetic
- pacemaker
- inherent
Answer: B
Page Ref: 9
Learning Obj.: 1.4
10) Which cardiac cells are responsible for initiating and conducting pacemaker impulses?
- Motor cells
- Mechanical cells
- Electrical cells
- Atrioventricular cells
Answer: C
Page Ref: 1
Learning Obj.: 1.1
11) Which is the normal pacemaker of the heart?
- SA node
- AV node
- AV junction
- Ventricle
Answer: A
Page Ref: 5
Learning Obj.: 1.3
12) Which of the following is NOT a part of the normal cardiac conduction system?
- Coronary sinus
- AV node
- Purkinje Fibers
- Internodal pathways
Answer: A
Page Ref: 5
Learning Obj.: 1.1
13) What is the term for the fail-safe mechanism that allows a lower pacemaker to take over when a higher site fails?
- Polarization
- Irritability
- AV conduction
- Escape
Answer: D
Page Ref: 7
Learning Obj.: 1.4
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4 Copyright © 2017 Pearson Education, Inc.14) Which of the following best explains the mechanism called irritability?
- The ventricles repolarize before they are ready.
- The normal pacemaker slows down and gives up control.
- A lower pacemaker site speeds up to take control of the heart.
- The normal pacemaker changes its inherent rate.
Answer: C
Page Ref: 7
Learning Obj.: 1.4
15) Which of the following does NOT happen when the sympathetic branch is stimulated?
- Heart rate increases.
- The heart becomes more irritable.
- Impulses go faster through the AV node.
- Ventricular conduction slows down.
Answer: D
Page Ref: 8
Learning Obj.: 1.4
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