MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Time taken in breathing _______ |
| A. | inspiration 2 sec and expiration 3 sec |
| B. | inspiration 3 sec and expiration 3 sec |
| C. | inspiration 2 sec and expiration 2 sec |
| D. | inspiration 3 sec and expiration 2 sec |
| Answer» B. inspiration 3 sec and expiration 3 sec | |
| 2. |
Decrease in thoracic volume is marked by________ |
| A. | diaphragm relaxed |
| B. | diaphragm contracted |
| C. | sternum moving towards ventral and anterior direction |
| D. | ribs moving out |
| Answer» B. diaphragm contracted | |
| 3. |
Which one of the following changes takes place during inspiration? |
| A. | Decrease in thoracic cavity |
| B. | Relaxation in diaphragm |
| C. | Relaxation in external intercostal muscles |
| D. | Sternum moves towards ventral and anterior direction |
| Answer» E. | |
| 4. |
Vital capacity = ________ |
| A. | ERV + RV |
| B. | IRV + TV |
| C. | IRV + TV + ERV + RV |
| D. | IRV + ERV + TV |
| Answer» E. | |
| 5. |
Which muscles can help in increasing the strength of breathing? |
| A. | Arm muscle |
| B. | Chest muscles |
| C. | Abdominal muscles |
| D. | Facial muscle |
| Answer» D. Facial muscle | |
| 6. |
The amount of air inspired or expired during normal breathing is_________ ml. |
| A. | 500 |
| B. | 500-1000 |
| C. | 1000-1100 |
| D. | 2100 |
| Answer» B. 500-1000 | |
| 7. |
Inspiration occurs when there is ___________ |
| A. | no pressure gradient |
| B. | negative pressure in the lungs |
| C. | positive pressure in the lungs |
| D. | more pressure in lungs than atmosphere |
| Answer» C. positive pressure in the lungs | |
| 8. |
At the time of inspiration, _________ takes place. |
| A. | relaxation in external intercostal muscle |
| B. | relaxation in diaphragm |
| C. | contraction in diaphragm |
| D. | no effect on diaphragm |
| Answer» D. no effect on diaphragm | |
| 9. |
Which of the following is passive process? |
| A. | Inspiration |
| B. | Normal expiration |
| C. | Forceful inspiration |
| D. | Forceful expiration |
| Answer» C. Forceful inspiration | |
| 10. |
Which instrument is used for measuring volume of air involved in breathing? |
| A. | Spirometer |
| B. | Galvanometer |
| C. | Aerometer |
| D. | Electrocardiogram |
| Answer» B. Galvanometer | |