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Q. No.The contraction of external intercostal muscles:
1. elevates the rib cage and brings about exhalation.
2. elevates the rib cage and brings about inhalation.
3. depresses the rib cage and brings about exhalation.
4. depresses the rib cage and brings about inhalation.
Subtopic: Mechanism of Breathing |
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Where do you expect the partial pressure of oxygen to be the highest?
1. in the alveolar air
2. in the deoxygenated blood
3. in the oxygenated blood
4. at tissues
1. in the alveolar air
2. in the deoxygenated blood
3. in the oxygenated blood
4. at tissues
Subtopic: Respiratory System: Exchange of Gases |
90%
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The pathological hallmark of Bronchial Asthma is:
1. Pulmonary fibrosis
2. Pleural edema
3. Breaking of alveolar septa
4. Inflammation of bronchi and bronchioles
1. Pulmonary fibrosis
2. Pleural edema
3. Breaking of alveolar septa
4. Inflammation of bronchi and bronchioles
Subtopic: Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 |
94%
From NCERT
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The respiratory rhythm center:
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: | is located in the medulla oblongata. |
| II: | regulates the duration of inhalation and increases respiratory rate. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Respiratory System: Regulation of Respiration |
From NCERT
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How would the diffusing capacities of carbon dioxide and oxygen across the respiratory membrane compare?
| 1. | The diffusing capacity of oxygen is 20 to 25 times higher than the diffusing capacity of carbon dioxide. |
| 2. | The diffusing capacity of carbon dioxide is 20 to 25 times higher than the diffusing capacity of oxygen. |
| 3. | The diffusing capacity of oxygen is 200 to 250 times higher than the diffusing capacity of carbon dioxide. |
| 4. | The diffusing capacity of carbon dioxide is 200 to 250 times higher than the diffusing capacity of oxygen. |
Subtopic: Respiratory System: Exchange of Gases |
91%
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The trachea:
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: | divides into two principal bronchi at the level of 7th thoracic vertebra. |
| II: | is invested by incomplete cartilaginous rings in its wall. |
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 |
80%
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The formation of carbaminohaemoglobin at tissue is primarily related to:
| 1. | pCO2 | 2. | pO2 |
| 3. | H+ ions | 4. | Temperature |
Subtopic: Respiratory System: Transport of Gases |
80%
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Which of the following will be considered as ‘normal’ for a healthy human adult?
| I: | A resting respiratory rate of 12- 16 breaths per minute. |
| II: | A minute ventilation of 6000 – 8000 ml. |
| 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: Pulmonary Volumes & Capacities | Mechanism of Breathing |
85%
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What is the partial pressure of carbon dioxide in the alveoli of human lungs?
1. 40 mm Hg
2. 45 mm Hg
3. 95 mm Hg
4. 104 mm Hg
1. 40 mm Hg
2. 45 mm Hg
3. 95 mm Hg
4. 104 mm Hg
Subtopic: Respiratory System: Exchange of Gases |
81%
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Functional residual capacity is defined as:
| 1. | Total volume of air a person can inspire after a normal expiration. |
| 2. | Volume of air that will remain in the lungs after a normal expiration. |
| 3. | Total volume of air a person can expire after a normal inspiration. |
| 4. | The maximum volume of air a person can breathe in after a forced expiration |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
77%
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