Cardiovascular System Physiology Set 2

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Physiology (Cardio-Vascular System Set 2)

MCQ

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1. The longest wave in ECG is:

A) P wave

B) T wave

C) Q wave

D) R wave

E) S wave

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2. Diacrotic notch is due to:

A) sudden closure of AV valves

B) sudden closure of aortic valve

C) sudden decrease in aortic pressure

D) marked decrease in ventricular pressure

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3. The systolic pressure in the left ventricle is:

A) 130 mmHg

B) 110 mmHg

C) 150 mmHg

D) 80 mmHg

E) 100 mmHg

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4. P wave is due to:

A) atrial depolarization

B) atrial repolarization

C) atrial systole

D) atrial diastole

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5. Cannon waves appear in:

A) Complete heart block

B) AV nodal rhythm

C) ventricular extrasystole

D) non of the above

E) all of the above

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6. C wave in jugular venous pulse occurs in:

A) isometric contraction phase

B) isometric relaxation phase

C) maximum ejection phase

D) atrial systole phase

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7. QRS complex is due to:

A) ventricular repolarization

B) ventricular depolarization

C) atrial depolarization

D) atrial repolarization

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8. The greatest percentage of blood volume is found in the :

A) Heart

B) Aorta

C) Distributing arteries and arterioles

D) capillaries

E) venules and veins

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9. All cardiac valves are opened in:

A) isometric relaxation phase

B) isometric contraction phase

C) maximum filling phase

D) all of the above

E) non of the above

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10. First heart sound occurs in:

A) isometric contraction phase

B) atrial systole phase

C) isometric relaxation phase

D) maximum filling phase

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11. All are involved in ventricular filling except:

A) atrial systole phase

B) maximum ejection phase

C) maximum filling phase

D) reduced filling phase

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12. P-R interval is prolonged in all the following cases except:

A) A-V nodal rhythm

B) atrial hypertrophy

C) high vagal tone

D) first degree heart block

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13. Pulses alternans occurs in

A) extrasystoles

B) arteriosclerosis

C) heart failure

D) constrictive pericarditis

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14. A-C interval is prolonged in:

A) A-V nodal rhythm

B) first degree heart block

C) pulmonary hypertension

D) all of the above

E) non of the above

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15. During the reduced ejection phase, which one of the following is true:

A) left atrial pressure is falling

B) aortic pressure is falling below left ventricular pressure

C) the A-V valves are closed

D) left ventricular pressure is constant

E) the QRS complex terminates just before this phase

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16. AV valves are opened in:

A) isometric contraction phase

B) atrial systole phase

C) protodiastolic phase

D) maximum ejection phase

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17. QRS complex lies in:

A) isometric contraction phase

B) isometric relaxation phase

C) maximum filling phase

D) maximum ejection phase

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18. From the causes of diastolic murmur :

A) stenosis of aortic valve

B) stenosis of pulmonary valve

C) stenosis of mitral valve

D) ntraventricular septal defect

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19. The P wave of the ECG occurs at:

A) the beginning of atrial contraction

B) the end of atrial contraction

C) the beginning of ventricular contraction

D) the end of ventricular contraction

E) non of the above

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20. Diacrotic wave is caused by

A) escape of blood from the aorta to the periphery

B) elastic recoil of the aorta leading to increased aortic pressure

C) aortic regurgitation of blood

D) increase aortic distension

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21. Y wave in jugular venous pulse occurs in

A) isometric contraction phase

B) isometric relaxation phase

C) maximum filling phase

D) maximum ejection phase

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22. Pulsus deficit is detected in:

A) complete heart block

B) atrial fibrillation

C) heart failure

D) sinus tachycardia

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23. Ventricular pressure is higher than the atrial pressure in all phases
of the cardiac cycle except in:

A) isometric contraction phase

B) atrial systole phase

C) maximum ejection phase

D) reduced ejection phase

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24. Systolic pressure in right ventricle is:

A) 35 mmHg

B) 25 mmHg

C) 15 mmHg

D) 45 mmHg

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25. Water hammer pulse occurs in:

A) arteriosclerosis

B) hyperthyroidism

C) aortic regurgitation

D) all of the above

E) non of the above

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Cardiovascular System Physiology Set 2

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