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Q. No.Match the following respiratory structures with their respective functions:
Structure
Function
(A)
Alveoli
(1)
Sound production
(B)
Trachea
(2)
Gas exchange
(C)
Larynx
(3)
Transport of air
(D)
Diaphragm
(4)
Increase thoracic volume during inspiration
Options:
1. A-3, B-2, C-4, D-1
2. A-4, B-1, C-3, D-2
3. A-1, B-4, C-2, D-3
4. A-2, B-3, C-1, D-4
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
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Level 1: 80%+
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Which of the following best explains why CO₂ diffuses more easily across the respiratory membrane than O₂?
.
| 1. | CO₂ is more abundant in the atmosphere than O₂. |
| 2. | CO₂ has higher solubility than O₂. |
| 3. | CO₂ has a smaller molecular size than O₂. |
| 4. | CO₂ is present in higher concentrations in the lungs |
Subtopic: Respiratory System: Exchange of Gases |
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Level 1: 80%+
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In terms of partial pressures, what is the primary driving force for the diffusion of oxygen from alveoli into the blood?
| 1. | The concentration gradient of O2 between the blood and alveoli |
| 2. | The thickness of the diffusion membrane |
| 3. | The concentration of CO2 in the blood |
| 4. | The presence of high levels of nitrogen in the alveoli |
Subtopic: Respiratory System: Exchange of Gases |
79%
Level 2: 60%+
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Which of the following processes is facilitated by the enzyme carbonic anhydrase?
| 1. | Conversion of O₂ into oxyhemoglobin in the alveoli. |
| 2. | Formation of carbamino-hemoglobin in tissues. |
| 3. | Conversion of CO₂ into bicarbonate ions in RBCs. |
| 4. | Binding of oxygen to hemoglobin in tissues. |
Subtopic: Respiratory System: Transport of Gases |
78%
Level 2: 60%+
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Asthma is caused by:
| 1. | Inflammation of the bronchi and bronchioles, causing difficulty in breathing |
| 2. | Damage to alveolar walls due to smoking |
| 3. | Accumulation of fluid in the pleural cavity |
| 4. | Swelling of the nasal cavity |
Subtopic: Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
95%
Level 1: 80%+
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What is the primary factor that determines the direction of gas exchange in the alveoli?
| 1. | The solubility of gases in water |
| 2. | The thickness of the alveolar membrane |
| 3. | The partial pressure gradient of gases |
| 4. | The hemoglobin concentration in blood |
Subtopic: Respiratory System: Exchange of Gases |
81%
Level 1: 80%+
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The volume of air inspired or expired in one breath under resting conditions is called:
1. Vital capacity
2. Inspiratory reserve volume
3. Tidal volume
4. Residual volume
1. Vital capacity
2. Inspiratory reserve volume
3. Tidal volume
4. Residual volume
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
86%
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Which part of the brain regulates the rhythmicity of breathing?
1. Cerebrum
2. Medulla oblongata
3. Hypothalamus
4. Pons
1. Cerebrum
2. Medulla oblongata
3. Hypothalamus
4. Pons
Subtopic: Respiratory System: Regulation of Respiration |
82%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | During inspiration, the intra-pulmonary pressure becomes less than the atmospheric pressure. |
| Reason (R): | Contraction of the diaphragm and external intercostal muscles increases the thoracic volume. |
| 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. | (A) is False but (R) is True. |
Subtopic: Respiratory System: Pulmonary Ventilation |
81%
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Consider the given two statements:
Choose the correct option:
| Assertion (A): | Inhalation of carbon monoxide (CO) is dangerous and can be fatal. |
| Reason (R): | Carbon monoxide has a much higher affinity for haemoglobin than oxygen, forming carboxyhaemoglobin and reducing oxygen transport. |
Choose the correct option:
| 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. | (A) is False but (R) is True. |
Subtopic: Respiratory System: Transport of Gases |
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