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WorksheetsCardiology Quiz
Total questions: 20
Worksheet time: 10mins
Which wave in ECG represents atrial depolarization?
Q wave
T wave
P wave
R wave
Which of the following best describes the pacemaker potential?
Fast depolarization
Constant resting membrane potential
Slow diastolic depolarization
No electrical activity
What is the normal duration of the PR interval?
0.04 sec
0.12–0.20 sec
0.25 sec
0.30 sec
The "lub" sound (first heart sound) is caused by?
Opening of semilunar valves
Closure of AV valves
Closure of semilunar valves
Filling of atria
The "dub" sound (second heart sound) corresponds to?
Closure of AV valves
Opening of AV valves
Closure of semilunar valves
Filling of ventricles
Which phase of cardiac cycle has maximum ventricular pressure?
Atrial systole
Ventricular systole
Rapid filling phase
Isovolumetric relaxation
What happens during isovolumetric contraction?
Atria contract
Ventricles eject blood
Both valves are open
Both valves are closed
Einthoven's Law relates to?
Heart rate
Conduction velocity
ECG leads
Jugular pulse
Which lead configuration is used in Einthoven's Law?
I, II, III
aVR, aVL, aVF
Precordial leads
V1–V6
Which ECG wave represents ventricular repolarization?
P wave
T wave
QRS complex
U wave
The pacemaker of the heart is?
AV node
Bundle of His
Purkinje fibers
SA node
During rapid filling phase of cardiac cycle?
AV valves are closed
Semilunar valves are open
AV valves are open
All valves are closed
The JVP 'a' wave is due to?
Atrial systole
Ventricular systole
Tricuspid regurgitation
AV node delay
Which heart sound is associated with closure of AV valves?
S1
S2
S3
S4
Which heart sound is caused by rapid filling of ventricles?
S1
S2
S3
S4
Which of the following occurs during diastole?
Ventricular contraction
Atrial contraction
Semilunar valve opening
Ventricular filling
Systolic murmur may be heard in?
Mitral stenosis
Aortic regurgitation
Mitral regurgitation
Atrial septal defect
Which component of ECG represents ventricular depolarization?
P wave
T wave
QRS complex
U wave
The dicrotic notch in the aortic pressure curve corresponds to?
Atrial systole
AV valve closure
Semilunar valve closure
Ventricular contraction
Which phase of cardiac cycle lasts longest?
Atrial systole
Ventricular systole
Isovolumetric contraction
Diastole
