MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these devices is used to hear the heart sounds? |
| A. | Endoscope |
| B. | Stethoscope |
| C. | Sphygmomanometer |
| D. | Electrocardiograph |
| Answer» C. Sphygmomanometer | |
| 2. |
What is the average cardiac output for a healthy individual? |
| A. | 5000 ml |
| B. | 70 ml |
| C. | 500 ml |
| D. | 1000 ml |
| Answer» B. 70 ml | |
| 3. |
What is the formula for cardiac output? |
| A. | Stroke volume heart rate |
| B. | Stroke volume + heart rate |
| C. | Stroke volume heart rate |
| D. | Stroke volume / heart rate |
| Answer» D. Stroke volume / heart rate | |
| 4. |
What is the approximate stroke volume? |
| A. | 250 ml |
| B. | 5000 ml |
| C. | 70 ml |
| D. | 500 ml |
| Answer» D. 500 ml | |
| 5. |
What is the approximate duration of a cardiac cycle? |
| A. | 0.1 seconds |
| B. | 72 seconds |
| C. | 1 minute |
| D. | 0.8 seconds |
| Answer» E. | |
| 6. |
The first heart sound occurs due to the closure of the semilunar valves. True or false? |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
What happens when the ventricular pressure decreases? |
| A. | Blood from pulmonary artery flows into ventricle |
| B. | The semilunar valves remain open |
| C. | The tricuspid and bicuspid valves open |
| D. | Atrial pressure decreases |
| Answer» D. Atrial pressure decreases | |
| 8. |
Which of these events do not occur during ventricular systole? |
| A. | Closure of tricuspid and bicuspid valves |
| B. | Atrial diastole |
| C. | Opening of the semilunar valves |
| D. | Flow of blood from atria to ventricles |
| Answer» E. | |
| 9. |
Which of these events coincide with ventricular systole? |
| A. | Atrial diastole |
| B. | Atrial systole |
| C. | Joint diastole |
| D. | Ventricular diastole |
| Answer» B. Atrial systole | |
| 10. |
Which structure is not responsible for the transmission of action potential to the ventricles? |
| A. | AV bundle |
| B. | AVN |
| C. | SAN |
| D. | Bundle of His |
| Answer» D. Bundle of His | |
| 11. |
During atrial systole, blood flow toward the ventricles increases by what percent? |
| A. | 10% |
| B. | 30% |
| C. | 50% |
| D. | 70% |
| Answer» C. 50% | |
| 12. |
Which of these occurs during the atrial systole? |
| A. | Both atria contract simultaneously |
| B. | Action potential is generated by the AVN initially |
| C. | Tricuspid valve closes |
| D. | The semilunar valves remain open |
| Answer» B. Action potential is generated by the AVN initially | |
| 13. |
In the joint diastole state, which of these events do not occur? |
| A. | All four chambers are relaxed |
| B. | Both tricuspid and bicuspid valves are open |
| C. | Blood from pulmonary vein flows into the right atrium |
| D. | Both semilunar valves are closed |
| Answer» D. Both semilunar valves are closed | |