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The two normal heartsounds are:
A. S1.S2
B. loud SI. opening snap
C. S3. S4
D. ejection click, friction rub

SI is caused by:
A. opening of the semilunar valves
B. opening of the atrioventricular valves
C. closure of the semilunar valves
D. closure of the atrioventricular valves

The major component of the SI heart sound is closure of the:
A. mitral valve
B. tricuspid valve
C. pulmonic valve
D. aortic valve

S2 is caused by the:
A. closure of the atrioventricular valves
B. closure of the semilunar valves
C. opening of the semilunar valves
D. opening of the atrioventricular valves

SI occurs when:
A. ventricular pressure exceeds atrial pressure
B. arterial pressure exceeds ventricular pressure
C. ventricular pressure exceeds arterial pressure
D. ventricular pressure exceeds arterial pressure

According to the electrocardiogram. SI coincides with the:
A. A wave
B. T wave
C. u wave
D. QRS complex

Compared to the mitral valve, tricuspid valve closure normally occurs:
A. varies
B. after
C. before
D. simultaneous

S2 occurs when:
a. ventricular pressure falls below atrial
pressure
b. atrial pressure exceeds ventricular pressure
c. ventricular pressure falls below arterial pressure
d. arterial pressure exceeds ventricular pressure

In relation to the electrocardiogram, S2 occurs at the end
of the:
A. T wave
B. A wave
C. QRS complex
D. u wave

Ml Compared to the aortic valve, the pulmonary valve
normally closes:
A. varies
B. after
C. before
D. simultaneous