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Q. No.What prevents the entry of food into the larynx during deglutition?
1. A thin elastic cartilaginous flap
2. A thick fibrous cartilaginous flap
3. A thick elastic cartilaginous flap
4. A thin calcified cartilaginous flap
1. A thin elastic cartilaginous flap
2. A thick fibrous cartilaginous flap
3. A thick elastic cartilaginous flap
4. A thin calcified cartilaginous flap
Subtopic: Respiratory System: Upper Respiratory Tract |
79%
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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 |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
95%
From NCERT
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Consider the following two statements:
| I: | The lungs are situated in the thoracic chamber which is anatomically an air-tight chamber. |
| II: | This arrangement is essential as we cannot directly alter the thoracic volume. |
| 1. | Both I and II are correct and II correctly explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct and II is incorrect |
| 4. | Both I and II are incorrect |
Subtopic: Respiratory System: Pulmonary Ventilation |
From NCERT
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Regarding pulmonary capacities, the maximum volume of air a person can breathe in after a forced expiration can also be defined as:
| 1. | Total volume of air a person can inspire or expire after a normal inspiration or expiration |
| 2. | Volume of air that will remain in the lungs after a normal expiration |
| 3. | Maximum volume of air a person can breathe out after a forced inspiration |
| 4. | Total volume of air accommodated in the lungs at the end of a forced inspiration |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
73%
From NCERT
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Which of the following will not be equal in normal physiological conditions?
| 1. | Partial pressure of oxygen in deoxygenated blood and partial pressure of oxygen in tissues |
| 2. | Partial pressure of carbon dioxide in alveoli and partial pressure of carbon dioxide in oxygenated blood |
| 3. | Partial pressure of oxygen in oxygenated blood and partial pressure of oxygen in alveoli |
| 4. | Partial pressure of carbon dioxide in tissues and partial pressure of carbon dioxide in deoxygenated blood |
Subtopic: Respiratory System: Exchange of Gases |
69%
From NCERT
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The binding of oxygen with hemoglobin is primarily related to:
| 1. | Partial pressure of carbon dioxide |
| 2. | Partial pressure of oxygen |
| 3. | H+ ion concentration in body fluids |
| 4. | Presence of 2,3-DPG in erythrocytes |
Subtopic: Respiratory System: Transport of Gases |
82%
From NCERT
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Under normal physiological conditions, what amount of oxygen is delivered to the tissues?
| 1. | 4 ml | 2. | 5 ml |
| 3. | 15 ml | 4. | 20 ml |
Subtopic: Respiratory System: Transport of Gases |
85%
From NCERT
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Identify the incorrect statement regarding the enzyme carbonic anhydrase:
| 1. | RBCs contain a very high concentration of this enzyme |
| 2. | The enzyme is absent in the plasma |
| 3. | It facilitates the reaction catalyzed in both directions |
| 4. | It is a metalloenzyme |
Subtopic: Respiratory System: Transport of Gases |
69%
From NCERT
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Pneumotaxic center:
| 1. | moderates the function of the rhythm center |
| 2. | establishes the respiratory rhythm |
| 3. | is located in medulla oblongata |
| 4. | reduces the duration of expiration and thereby alters the respiratory rate |
Subtopic: Respiratory System: Regulation of Respiration |
69%
From NCERT
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Pulmonary fibrosis is a pathological hallmark of:
1. Chronic obstructive lung disease
2. Bronchial asthma
3. Viral Pneumonia in children
4. Occupational lung diseases
Subtopic: Respiratory Disorders: Part 1 |
88%
From NCERT
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