Q. No.Which of the following is true for inspiration
1.
thoracic chamber volume increases
2.
Diaphragm contracts
3.
pulmonary volume increases
4.
All of these
Which of the following is true for expiration except
(1) thoracic chamber volume reduces
(2)Diaphragm contracts
(3)pulmonary volume decreases
(4)All of these
Pressure gradient between the lungs and atmosphere is maintained by
| 1. | diaphragm |
| 2. | external intercostal muscles |
| 3. | internal intercostal muscles |
| 4. | All of these |
Which of the following events happen when air enters lungs
| 1. | Ribs and sternum raised |
| 2. | volume of thorax increased |
| 3. | Diaphragm contracted |
| 4. | All of the above |
Which of the following volume of air cannot be measured by respirometer?
| 1. | IRV | 2. | ERV |
| 3. | RV | 4. | Both A and B |
Volume of air which does not participate in gaseous exchange is
| 1. | Residual volume | 2. | Dead space air |
| 3. | Tidal volume | 4. | Both A and B |
The volume of air expired normally after forceful inspiration
(1)TV+ IRV
(2)TV+ERV
(3)TV
(4)None of these
The volume of air expired forcefully after normal inspiration
| 1. | TV+ IRV | 2. | TV+ERV |
| 3. | TV | 4. | None of these |
Most of the aquatic arthropods respire through:
1. diffusion over entire body surface
2. gills
3. tracheae and tracheoles
4. skin
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