- 1(current)
Q. No.The second heart sound [dub] is associated with simultaneous closure of:
| 1. | Right AV and pulmonary semilunar valve |
| 2. | Left AV and aortic semilunar valve |
| 3. | Right and left AV valves |
| 4. | Right and left semilunar valves |
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The first heart sound is heard during:
| 1. | beginning of ventricular systole |
| 2. | end of ventricular systole |
| 3. | atrial systole |
| 4. | ventricular ejection |
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Cardiac output is defined as
1. blood pressure X stroke volume.
2. peripheral resistance X heart rate.
3. heart rate X stroke volume.
4. Systolic pressure – diastolic pressure.
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What is the percentage of atrial blood that flows into the ventricles without atrial systole?
| 1. | 90 | 2. | 70 |
| 3. | 50 | 4. | 30 |
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| 1. | ventricular filling. |
| 2. | the atrioventricular valves to close, and then the semilunar valves to open. |
| 3. | the semilunar valves to close, and then the atrioventricular valves to open. |
| 4. | pressure to become greater in the aorta and pulmonary trunk than in the ventricles. |
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- 1(current)
Q. No.
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