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Q. No.A measure of the amount of air a person inhales during a normal breath is:
1. inspiratory reserve volume
2. vital capacity
3. total lung capacity
4. tidal volume
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
79%
From NCERT
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The amount of air that remains in a person's lungs after fully exhaling is known as:
| 1. tidal volume | 2. expiratory reserve volume |
| 3. vital capacity | 4. residual volume |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
87%
From NCERT
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Gas exchange in the human lungs takes place across the respiratory membrane which is made up of:
| 1. | alveolar macrophages and the alveolar cell membrane |
| 2. | alveolar cell membrane and its basement membrane |
| 3. | alveolar cell membrane and capillary membrane |
| 4. | alveolar cell membrane, capillary membrane, and fused basement membranes |
Subtopic: Respiratory System: Exchange of Gases |
85%
From NCERT
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The conversion of carbon dioxide into carbonic acid in the red blood cells is catalyzed by the enzyme:
| 1. hemoglobin | 2. carbonic anhydrase |
| 3. carbonic oxidoreductase | 4. carbonic transferase |
Subtopic: Respiratory System: Exchange of Gases |
90%
From NCERT
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When compared with carbon dioxide, the partial pressure of oxygen in the air and its solubility in water is respectively:
| 1. | lower, lower | 2. | lower, higher |
| 3. | greater, lower | 4. | greater, higher |
Subtopic: Respiratory System: Exchange of Gases |
71%
From NCERT
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What is the partial pressure of oxygen and carbon dioxide respectively in the venous blood leaving the tissues [in mm of Hg]?
| 1. | 104, 40 | 2. | 95, 40 |
| 3. | 40, 45 | 4. | 20, 46 |
Subtopic: Respiratory System: Exchange of Gases |
86%
From NCERT
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A minimal amount of pleural fluid present in the pleural cavity:
| 1. | provides a medium for the exchange of respiratory gases |
| 2. | reduces friction between the visceral and parietal pleurae |
| 3. | provides lubrication for movements of the diaphragm |
| 4. | permits the exchange of electrolytes during respiration |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
92%
From NCERT
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When the diaphragm or external intercostal muscles contract, intrapulmonary pressure should
| 1. | increase | 2. | decrease |
| 3. | remain constant | 4. | equal atmospheric pressure |
Subtopic: Respiratory System: Pulmonary Ventilation |
81%
From NCERT
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During deglutition, the food is prevented from entering into the larynx by the cartilaginous:
| 1. epiglottis | 2. glottis |
| 3. aryepiglottic fold | 4. laryngeal prominence |
Subtopic: Respiratory System: Upper Respiratory Tract |
93%
From NCERT
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The trachea divides into a right and a left primary bronchus at the level of:
1. 2nd thoracic vertebra
2. 3rd thoracic vertebra
3. 5th thoracic vertebra
4. 12th thoracic vertebra
1. 2nd thoracic vertebra
2. 3rd thoracic vertebra
3. 5th thoracic vertebra
4. 12th thoracic vertebra
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
95%
From NCERT
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