Anatomy Of The Heart - ECG
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Anatomy of the Heart - ECG
- 1.The rapidly conducting fibers that supply the ventricles
- A.
SA node
- B.
AV node
- C.
QRS complex
- D.
Purkinje
- E.
P-R interval
- 2.Phase of the cardiac impulse (action potential) that is due to the outflow (effux) of K+
- A.
Repolarization
- B.
Depolarization
- C.
P wave
- D.
T wave
- E.
QRS complex
- 3.Part of the ECG that represents ventricular repolarization
- A.
Purkinje
- B.
SA node
- C.
AV node
- D.
P wave
- E.
T wave
- 4.Part of the ECG that indicates the time it takes for the electrical signal to travel from the atrium to the ventricle
- A.
QRS complex
- B.
AV node
- C.
T wave
- D.
P-R interval
- E.
Depolarization
- 5.Part of the ECG that indicates atrial depolarization
- A.
P wave
- B.
T wave
- C.
SA node
- D.
AV node
- E.
QRS complex
- 6.The semilunar valves open in response to
- A.
Rising ventricular pressure during ventricular contraction
- B.
Rising atrial pressure
- C.
Rising pressure in the pulmonary artery and aorta
- D.
Increasing oxygen saturation of the hemoglobin
- 7.The AV valves close in response to
- A.
Rising ventricular pressure during ventricular contraction
- B.
Rising atrial pressure
- C.
Rising pressure in the pulmonary artery and aorta
- D.
Increasing oxygen saturation of the hemoglobin
- 8.What is happening when the ventricles are filling?
- A.
The semilunar valves are open
- B.
The AV valves are closed
- C.
The QRS complex is "happening"
- D.
The ventricles are relaxed
- 9.Identify this: a quivering ventricular muscle that is unable to pump blood.
- A.
Heart block
- B.
Pericardial effusion
- C.
Friction rub
- D.
Fibrillation
- 10.A prolonged P-R interval means that
- A.
Heart rate is too fast
- B.
Heart rate is too slow
- C.
The signal traveling from the atria to the ventricles is abnormally slow
- D.
There is an ectopic focus
- 11.What is the cause of the heart sounds "lubb dupp"?
- A.
Vibrations caused by closure of the valves
- B.
Firing of the SA node
- C.
Movement of blood through holes in the interventricular septum
- D.
Flow of blood through the coronary blood vessels
- 12.Plasma elevations of CPK, AST, LDH, and troponin are indicative of
- A.
Leaky valves
- B.
Ventricular hypertrophy
- C.
Damage of myocardial cells
- D.
Pericardial effusion
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