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Q. No.Transport of gases in alveoli takes place by:
1. Active transport
2. Passive transport
3. Simple diffusion
4. None of the above
Subtopic: Respiratory System: Exchange of Gases |
86%
From NCERT
AIPMT - 1998
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In the diffusion membrane in human lungs, a basement membrane supports:
| I. Alveolar epithelium | II. Vascular endothelium |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Respiratory System: Exchange of Gases |
71%
From NCERT
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Identify the wrong statement with reference to the transport of oxygen.
| 1. | Partial pressure of CO2 can interfere with O2 binding with haemoglobin. |
| 2. | Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin. |
| 3. | Low pCO2 in alveoli favours the formation of oxyhaemoglobin. |
| 4. | Binding of oxygen with haemoglobin is mainly related to partial pressure of O2. |
Subtopic: Respiratory System: Transport of Gases Part 1 | Respiratory System: Transport of Gases |
81%
From NCERT
NEET - 2020
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Which of the following pulmonary capacities is not correctly matched with its constituent pulmonary volumes?
| 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 |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
89%
From NCERT
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Consider the given two statements:
| 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 |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
54%
From NCERT
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The sound box in humans is:
1. the larynx and is entirely made up of cartilage
2. the larynx and is entirely made up of bone
3. the muscular pharynx
4. the glottis where mucosal folds are present
1. the larynx and is entirely made up of cartilage
2. the larynx and is entirely made up of bone
3. the muscular pharynx
4. the glottis where mucosal folds are present
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
94%
From NCERT
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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 |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
76%
From NCERT
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Consider the given two statements:
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
| 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. |
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Subtopic: Respiratory System: Pulmonary Ventilation |
81%
From NCERT
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Match the items given Column I with those in Column II and select the correct option given below:
Options:
| 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 |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
91%
From NCERT
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Consider the given two statements:
| 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 |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung | Respiratory Organs |
81%
From NCERT
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