PhysioLec: Heart as a Pump

Question 1

TRUE OR FALSE: During isovolumetric contraction, there is a rise in atrial pressure.

Answer 1

True

Question 2

TRUE OR FALSE: Cardiac outputs of both ventricles are equal

Answer 2

True

Question 3

TRUE OR FALSE: Murmurs are heard due to narrowing of the orifice or regurgitation leading to a rippling effect, turbulent blood flow, and a vibration heard. This happens with valvular disease.

Answer 3

True

Question 4

TRUE OR FALSE: Hearing an S3 is normal.

Answer 4

False

Question 5

TRUE OR FALSE: (R) atrial systole occurs after (L) atrial systole.

Answer 5

False

Question 6

TRUE OR FALSE: Sleep increases cardiac output

Answer 6

False

Question 7

TRUE OR FALSE: The resting pressure in the pulmonary arteries is 10mmHg

Answer 7

True

Question 8

TRUE OR FALSE: Pulse is weak during hemorrhage

Answer 8

True

Question 9

TRUE OR FALSE: Myocardial contractility affects venous return

Answer 9

False

Question 10

TRUE OR FALSE: If the aortic valve is stenosed, you would hear the murmur in systole.

Answer 10

True

Question 11

TRUE OR FALSE: RV ejection begins before LV ejection

Answer 11

True

Because of pressure since RV only needs 10 mmHg as compared to LV’s 80 mmHg

Question 12

TRUE OR FALSE: Aging produces a faster pulse wave

Answer 12

True

Question 13

TRUE OR FALSE: The A wave corresponds to the blood regurgitation into the veins during atrial systole

Answer 13

True

Question 14

TRUE OR FALSE: If the semilunar valves are stenosed, the bruit will be heard during systole

Answer 14

True

Question 15

70% of blood fills the ventricles passively because of the high pressure in the SVC, IVC, and pulmonary veins. Aortic & pulmonic valves are closed.
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 15

B. Late diastole

Question 16

Ventricular pressure is very low.
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 16

B. Late diastole

Question 17

Atria and ventricular filling
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 17

B. Late diastole

Question 18

The remaining 30% of blood is pumped by the atria and an additional force is needed to pump the remaining 30% blood into the ventricles.
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 18

D. Atrial systole

Question 19

Rapid build up pressure of the ventricles to overcome the pressure in aorta (80 mmHg) and in the pulmonary artery (10 mmHg)
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 19

E. Isovolumetric ventricular contraction

Question 20

There is some regurgitation of blood to the great veins
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 20

D. Atrial systole

Question 21

The phase where both AV valves and semilunar valves are closed and the ventricular muscle initially shortens a little.
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 21

E. Isovolumetric ventricular contraction

Question 22

The phase where both AV valves and semilunar valves are open.
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 22

F. None

Question 23

Relaxation of the ventricles, ventricular pressure is higher than atrial pressure but the AV valves are not yet open (Isovolumetric ventricular relaxation). Known as protodiastole and the ventricular pressure decreases in preparation for the opening of mitral and tricuspid valve so that blood will flow back again into the ventricles.
A. Early diastole
B. Late diastole
C. Ventricular ejection
D. Atrial systole
E. Isovolumetric ventricular contraction
F. None

Answer 23

A. Early diastole