sharp new grad ekg exam
Study online at https://quizlet.com/_a2yox4
1. layers of the heart pericardium (outermost)
myocardium (middle)
endocardium (innermost)
2. Detailed layers of the fibrous pericardium (outer tough layer, contacts lung)
heart parietal layer of serous pericardium (fluid secreting membrane, parietal
layer)
pericardial space (between visceral and parietal pericardium)
visceral layer of serous pericardium
myocardium
endocardium
3. what electrolyte is re- sodium
sponsible for depolar-
ization of cardiac cell
4. what electrolyte is re- potassium
sponsible for both de-
polarization and repo-
larization of cardiac cell
5. what are the 4 primary automaticity
characteristics of a car- excitability
diac cell conductivity
contractility
6. automaticity the ability of the pacemaker cells to generate their own electrical impulses
spontaneously; this is specific to the pacemaker cells
7. excitability ability of cardiac cells to respond to an electrical impulse; this is shared
by all cardiac cells
8. conductivity
, sharp new grad ekg exam
Study online at https://quizlet.com/_a2yox4
ability of cardiac cells to conduct an electric impulse; this is shared by all
cardiac cells
9. contractility ability of cardiac cells to cause cardiac muscle contraction; this character-
istic is specific to the muscle cells
10. what are the two basic muscle cells (working cells)
kinds of cardiac cells pacemaker cells
11. what are the 3 differ- SA node
ent cardiac pacemak- AV node
ers and their rates? His-Purkinje system
12. SA node firing rate 60-100 bpm
13. AV node firing rate 40-60 bpm
14. Purkinje fibers firing 30-40bpm - sometimes less
rate/ventricles
15. relationship between -electric current flowing toward positive pole creates a positive deflection
current and flow and -electric current flowing toward negative pole causes negative deflection
waveform deflections -current flowing away from the poles causes biphasic deflection (both pos
and neg)
16. one big box (5x5 little 0.2sec
squares)
17. one little tiny box 0.04sec
18. axis on ECG box vertical - voltage
horizontal - time
19. P wave
Study online at https://quizlet.com/_a2yox4
1. layers of the heart pericardium (outermost)
myocardium (middle)
endocardium (innermost)
2. Detailed layers of the fibrous pericardium (outer tough layer, contacts lung)
heart parietal layer of serous pericardium (fluid secreting membrane, parietal
layer)
pericardial space (between visceral and parietal pericardium)
visceral layer of serous pericardium
myocardium
endocardium
3. what electrolyte is re- sodium
sponsible for depolar-
ization of cardiac cell
4. what electrolyte is re- potassium
sponsible for both de-
polarization and repo-
larization of cardiac cell
5. what are the 4 primary automaticity
characteristics of a car- excitability
diac cell conductivity
contractility
6. automaticity the ability of the pacemaker cells to generate their own electrical impulses
spontaneously; this is specific to the pacemaker cells
7. excitability ability of cardiac cells to respond to an electrical impulse; this is shared
by all cardiac cells
8. conductivity
, sharp new grad ekg exam
Study online at https://quizlet.com/_a2yox4
ability of cardiac cells to conduct an electric impulse; this is shared by all
cardiac cells
9. contractility ability of cardiac cells to cause cardiac muscle contraction; this character-
istic is specific to the muscle cells
10. what are the two basic muscle cells (working cells)
kinds of cardiac cells pacemaker cells
11. what are the 3 differ- SA node
ent cardiac pacemak- AV node
ers and their rates? His-Purkinje system
12. SA node firing rate 60-100 bpm
13. AV node firing rate 40-60 bpm
14. Purkinje fibers firing 30-40bpm - sometimes less
rate/ventricles
15. relationship between -electric current flowing toward positive pole creates a positive deflection
current and flow and -electric current flowing toward negative pole causes negative deflection
waveform deflections -current flowing away from the poles causes biphasic deflection (both pos
and neg)
16. one big box (5x5 little 0.2sec
squares)
17. one little tiny box 0.04sec
18. axis on ECG box vertical - voltage
horizontal - time
19. P wave
