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. |
The signal for voluntary muscle for forced breathing starts in ______ |
| A. | medulla |
| B. | cerebrum |
| C. | pons |
| D. | cerebellum |
| Answer» C. pons | |
| 2. |
Dead space air is _______ |
| A. | 150 CC |
| B. | 350 CC |
| C. | 500 CC |
| D. | 1500 CC |
| Answer» B. 350 CC | |
| 3. |
Which does not occur on normal inspiration? |
| A. | Contraction in diaphragm |
| B. | Contraction in external intercoastal muscle |
| C. | Contraction in internal intercoastal muscle |
| D. | Sternum moves upward |
| Answer» D. Sternum moves upward | |
| 4. |
Pneumotaxic centre is located in ________ |
| A. | pons |
| B. | cerebrum |
| C. | medulla |
| D. | cerebellum |
| Answer» B. cerebrum | |
| 5. |
Strength of inspiration and expiration can be increased with the help of_______ |
| A. | abdominal muscles |
| B. | external intercoastal muscle |
| C. | diaphragm |
| D. | internal intercoastal muscle |
| Answer» B. external intercoastal muscle | |
| 6. |
What happens to RBC of human blood at high altitude? |
| A. | Decrease in size |
| B. | Decrease in number |
| C. | Increase in size |
| D. | Increase in number |
| Answer» E. | |
| 7. |
Where is the respiratory rhythm center is located? |
| A. | Medulla region |
| B. | Aortic arch |
| C. | Pons region |
| D. | Carotid artery |
| Answer» B. Aortic arch | |
| 8. |
Contraction in diaphgram causes increase in thoracic volume in the _____ |
| A. | dorso-ventral axis |
| B. | antero-posterior axis |
| C. | dorso-posterior axis |
| D. | antero-ventral axis |
| Answer» C. dorso-posterior axis | |
| 9. |
Air that remains in lungs after most powerful expiration is _______ |
| A. | inspiratory air |
| B. | residual air |
| C. | dead space air |
| D. | tidal air |
| Answer» C. dead space air | |
| 10. |
Which of the following is the most important muscular structure in respiratory system of human? |
| A. | External intercoastal muscle |
| B. | Internal intercoastal muscle |
| C. | Diaphgram |
| D. | Vertebral column |
| Answer» D. Vertebral column | |