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Q. No.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 |
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At the alveoli:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The factors are all favourable for the formation of oxyhemoglobin. |
| II: | Carbon dioxide trapped as bicarbonate at the tissue level is released out as carbon dioxide. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Respiratory System: Exchange of Gases |
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Which of the following values for the given parameter is incorrect?
| 1. | Partial pressure of oxygen in alveolar air | 104 mm Hg |
| 2. | Partial pressure of carbon dioxide in deoxygenated blood | 45 mm Hg |
| 3. | Transport of carbon dioxide in blood as bicarbonate | 70 % |
| 4. | Transport of carbon dioxide as carbaminohemoglobin | 7 % |
Subtopic: Respiratory System: Transport of Gases |
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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%
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Identify the incorrectly matched pair:
| 1. | Tidal volume in a healthy human adult | About 500 ml |
| 2. | Partial pressure of oxygen in oxygenated blood | 159 mm Hg |
| 3. | Resting respiratory rate in a healthy adult | 12 to 16 per minute |
| 4. | Percent of carbon dioxide transported as bicarbonate in the blood | 70 |
Subtopic: Respiratory System: Pulmonary Ventilation | Respiratory System: Pulmonary Volumes & Capacities | Respiratory System: Exchange of Gases |
90%
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Which of the following statements is not correct?
| 1. | Every 100 ml of oxygenated blood can deliver around 5 ml of oxygen to the tissue under normal physiological conditions. |
| 2. | Oxygen gas has most potent effect on the central chemoreceptors and plays most vital role in regulation of respiration |
| 3. | Nearly 70 percent of carbon dioxide is carried as bicarbonate in the blood. |
| 4. | Every 100 ml of deoxygenated blood delivers about 4 ml of carbon dioxide to the alveoli. |
Subtopic: Respiratory System: Regulation of Respiration |
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A person has the following values of respiratory volumes:
His functional residual capacity and vital capacity respectively are:
| Tidal Volume | 400 ml |
| Expiratory reserve volume | 1000 ml |
| Inspiratory reserve volume | 2500 ml |
| Residual volume | 1000 ml |
His functional residual capacity and vital capacity respectively are:
| 1. | 2000 ml and 3900 ml | 2. | 2000 ml and 4900 ml |
| 3. | 1400 ml and 3900 ml | 4. | 1400 ml and 4900 ml |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | The amount of carbon dioxide that can diffuse through the diffusion membrane per unit difference in partial pressure is much higher compared to that of oxygen. |
| Reason (R): | The solubility of carbon dioxide is 20 – 25 times lower than that of oxygen. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Respiratory System: Exchange of Gases |
71%
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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 |
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Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?
1. Inflammation of bronchioles; decreased respiratory surface
2. Increased number of bronchioles; increased respiratory surface
3. Increased respiratory surface; inflammation of bronchioles
4. Decreased respiratory surface; inflammation of bronchioles
Subtopic: Respiratory Disorders: Part 1 |
91%
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