Which of the following is not correctly matched?
I: | Thoracic chamber is formed dorsally by | Sternum |
II: | Thoracic chamber is formed ventrally by | Vertebral column |
III: | Thoracic chamber is formed laterally by | Ribs |
IV: | Thoracic chamber is formed on the lower side by | Diaphragm |
1. | I and II only | 2. | II only |
3. | III and IV only | 4. | I, II, III and IV |
I: | Relaxation of the diaphragm and the intercostal muscles causes the expulsion of air from the lungs. |
II: | Relaxation of the diaphragm and the intercostal muscles increases the volume of thoracic chamber in the antero-posterior axis. |
Column I | Column II | ||
a. | Tidal volume | (i) | 2500-3000 mL |
b. | Inspiratory Reserve | (ii) | 1100-1200 mL |
c. | Expiratory Reserve | (iii) | 500-550 mL |
d. | Residual volume | (iv) | 1000-1100 mL |
a | b | c | d | |
1. | iii | ii | i | iv |
2. | iii | i | iv | ii |
3. | i | iv | ii | iii |
4. | iv | iii | ii | i |
I: | Lower invertebrates like sponges, coelenterates and flatworms exchange oxygen with carbon dioxide by simple diffusion over their entire body surface. |
II: | Fishes are the only vertebrates that do not use lungs as respiratory organs. |
1. | Only I is correct | 2. | Only II is correct |
3. | Both I and II are correct | 4. | Both I and II are incorrect |
1. | Inspiratory capacity | Tidal volume + Inspiratory reserve volume |
2. | Expiratory capacity | Tidal volume + Expiratory reserve volume |
3. | Functional residual capacity | Residual volume + Inspiratory reserve volume |
4. | Vital capacity | Tidal volume + Inspiratory reserve volume + Expiratory reserve volume |
I. Alveolar epithelium | II. Vascular endothelium |
1. | Only I | 2. | Only II |
3. | Both I and II | 4. | Neither I nor II |
Statement I: | The outer pleural membrane is in close contact with the thoracic lining. |
Statement II: | The inner pleural membrane is in contact with the lung surface. |
Statement III: | The part starting with the external nostrils up to the terminal bronchioles constitutes the respiratory or exchange part of the respiratory system. |
Statement IV: | The alveoli and their ducts form the conducting part of the respiratory system. |
1. | Statement I is correct; Statement II is correct; Statement III is correct; Statement IV is correct |
2. | Statement I is incorrect; Statement II is incorrect; Statement III is incorrect; Statement IV is incorrect |
3. | Statement I is correct; Statement II is correct; Statement III is incorrect; Statement IV is incorrect |
4. | Statement I is incorrect; Statement II is incorrect; Statement III is correct; Statement IV is correct |
Assertion (A): | Inspiration can occur if there is a negative pressure in the lungs with respect to atmospheric pressure. |
Reason (R): | The thoracic chamber is an airtight chamber. |
1. | Both (A) and (R) are True and (R) correctly explains (A) |
2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
3. | (A) is True, (R) is False |
4. | (A) is False, (R) is True |
Assertion (A): | An increase in pulmonary volume will cause inspiration. |
Reason (R): | An increase in pulmonary volume increases the intra-pulmonary pressure to more than the atmospheric pressure. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |