ECG ORIENTATION KAISER LATEST EXAM WITH
100% CORRECT ANSWERS
SA node - ANSWER Sino-atrial node; the pace-maker of the heart; where the impulse
conduction of the heart usually starts; located in the top of the right atrium. 60-100 bpm
AV node - ANSWER (atrioventricular node) region of the heart between the right atrium
and right ventricle from which electrical impulses spread to the ventricles during a
heartbeat. 40-60bpm
bundle of HIS - ANSWER Ability to self initiate electrical activity Rate: 40 - 60 beats per
minutes
REFRACTORY PERIOD - ANSWER the period of resistance to stimulation, cardiac cells
unable to respond to stimulus
relative refractory period - ANSWER cardiac cells have repolarized enough to respond
to strong stimulus
automaticity-ANSWER Ability of pacemaker cells to spontaneously initiate an electrical
impulse, SA node, AV junction, and Purkinje fibers
excitability-ANSWER ability to respond to stimuli
conductivity-ANSWER Ability to receive an electrical stimulus and conduct that impulse
to adjacent cells - all cardiac cells possess this.
contraction-ANSWER Cardiac cells shorten, causing muscular contraction in response
to an Electrical Stimulus
, Depolarization - Answer Movement Of Ions (Na+, Ca+, K+) Across Cell Membrane Causing
Inside Of Cell To Become More Positive, Electrical Conduction Results In Contraction.
Na+ Channels Open. Positive Inside, Negative Outside.
Repolarization - Answer Movement Of Ions Across Cell Membrane Where Inside Of Cell Is
Restored To Its Negative Charge. Sodium Channels Close. Potassium Channels Open.
Active Transport By Sodium-Potassium Pump
Deporization - Answer Electrical
Contraction - Answer Is Mechanical. Contraction Follows Depolarization.
What Occur First? Electrical Conduction, Or Mechanical Contraction?
- Answer Electrical Conduction
P Wave - Answer Atrial Depolarization
Qrs - Answer Ventrical Depolarization
T Wave - Answer Ventricular Repolarization
Purkinje Fibers - Answer Fibers That Carry Stimulation Throughout The
Ventricles. 20-40bpm
Junctional Rhythm Hr - Answer 40-60bpm
Ventricular Rhythm - Answer 20-40bpm
Tachycardia Non Symptomatic Treatment - Answer Vagal Maneuvers, Adenosine, Bb,
100% CORRECT ANSWERS
SA node - ANSWER Sino-atrial node; the pace-maker of the heart; where the impulse
conduction of the heart usually starts; located in the top of the right atrium. 60-100 bpm
AV node - ANSWER (atrioventricular node) region of the heart between the right atrium
and right ventricle from which electrical impulses spread to the ventricles during a
heartbeat. 40-60bpm
bundle of HIS - ANSWER Ability to self initiate electrical activity Rate: 40 - 60 beats per
minutes
REFRACTORY PERIOD - ANSWER the period of resistance to stimulation, cardiac cells
unable to respond to stimulus
relative refractory period - ANSWER cardiac cells have repolarized enough to respond
to strong stimulus
automaticity-ANSWER Ability of pacemaker cells to spontaneously initiate an electrical
impulse, SA node, AV junction, and Purkinje fibers
excitability-ANSWER ability to respond to stimuli
conductivity-ANSWER Ability to receive an electrical stimulus and conduct that impulse
to adjacent cells - all cardiac cells possess this.
contraction-ANSWER Cardiac cells shorten, causing muscular contraction in response
to an Electrical Stimulus
, Depolarization - Answer Movement Of Ions (Na+, Ca+, K+) Across Cell Membrane Causing
Inside Of Cell To Become More Positive, Electrical Conduction Results In Contraction.
Na+ Channels Open. Positive Inside, Negative Outside.
Repolarization - Answer Movement Of Ions Across Cell Membrane Where Inside Of Cell Is
Restored To Its Negative Charge. Sodium Channels Close. Potassium Channels Open.
Active Transport By Sodium-Potassium Pump
Deporization - Answer Electrical
Contraction - Answer Is Mechanical. Contraction Follows Depolarization.
What Occur First? Electrical Conduction, Or Mechanical Contraction?
- Answer Electrical Conduction
P Wave - Answer Atrial Depolarization
Qrs - Answer Ventrical Depolarization
T Wave - Answer Ventricular Repolarization
Purkinje Fibers - Answer Fibers That Carry Stimulation Throughout The
Ventricles. 20-40bpm
Junctional Rhythm Hr - Answer 40-60bpm
Ventricular Rhythm - Answer 20-40bpm
Tachycardia Non Symptomatic Treatment - Answer Vagal Maneuvers, Adenosine, Bb,
