Deck 1: Electrophysiology

Question 1

When stimulated, the branch of the nervous system will increase heart rate, AV conduction, and irritability.

A)inherent
B)pacemaker
C)parasympathetic
D)sympathetic

Answer 1

D

Question 2

The inherent rate of the AV junction is bpm.

A)20-40
B)60-100
C)40-60
D)100-

Answer 2

C

Question 3

The built-in rate of each of the three major areas of the conduction system is referred to as the rate.

A)fast
B)inherent
C)escape
D)heart

Answer 3

B

Question 4

Part of the parasympathetic branch of the autonomic nervous system is the nerve.

A)aortic
B)vagus
C)pericardial
D)coronary

Question 5

If polarizing is considered the ready state, then would be considered the recovery state.

A)depolarization
B)discharge
C)repolarization
D)polarization

Question 6

Which is the normal pacemaker of the heart?

A)AV junction
B)SA node
C)AV node
D)ventricle

Question 7

After leaving the area of the AV node, impulses go through the to reach the right and left bundle branches.

A)Bundle of His
B)Purkinje fibers
C)AV junction
D)SA node

Question 8

The inherent rate of the SA node is bpm.

A)30-60
B)100-120
C)60-100
D)40-60

Question 9

What term is used to refer to the process of electrical discharge and the flow of electrical activity?

A)polarization
B)repolarization
C)depolarization
D)polarized

Question 10

Which of the following does NOT happen when the sympathetic branch is stimulated?

A)Ventricular conduction slows down.
B)The heart becomes more irritable.
C)Impulses go faster through the AV node.
D)Heart rate increases.

Question 11

Which of the following best explains the mechanism called irritability?

A)A lower pacemaker site speeds up to take control of the heart.
B)The normal pacemaker changes its inherent rate.
C)The ventricles repolarize before they are ready.
D)The normal pacemaker slows down and gives up control.

Question 12

What is the term for the fail-safe mechanism that allows a lower pacemaker to take over when a higher site fails?

A)AV conduction
B)polarization
C)escape
D)irritability

Question 13

Which of the following is NOT a part of the normal cardiac conduction system?

A)AV node
B)internodal pathways
C)Purkinje Fibers
D)coronary sinus

Question 14

Which cardiac cells are responsible for initiating and conducting pacemaker impulses?

A)mechanical cells
B)electrical cells
C)atrioventricular cells
D)motor cells