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Q. No.Identify the correctly matched pairs:
I.
Asthma
inflammation of bronchi and bronchioles
II.
Emphysema
alveolar walls are damaged due to which respiratory
surface is decreased
III.
Occupational Respiratory Disorders
fibrosis [proliferation of fibrous tissues]
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
surface is decreased
Subtopic: Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
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A chemosensitive area is situated adjacent to the rhythm centre which is highly sensitive to:
I: CO2
II: O2
III: hydrogen ions
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
I: CO2
II: O2
III: hydrogen ions
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: Respiratory System: Regulation of Respiration |
87%
From NCERT
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Transport as carbaminohaemoglobin accounts for what percent of total carbon dioxide transport in blood?
1. 5 to 7
2. 20 to 25
3. 50 to 55
4. 70
1. 5 to 7
2. 20 to 25
3. 50 to 55
4. 70
Subtopic: Respiratory System: Transport of Gases |
81%
From NCERT
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Consider the two statements:
| Assertion (A): | Carbon dioxide (CO2) diffuses faster than oxygen (O2) across the respiratory membrane. |
| Reason (R): | CO2 is 20–25 times more soluble in blood and alveolar fluids than O2. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and (R) correctly explains (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Respiratory System: Exchange of Gases |
77%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | pO2 in alveolar air is less than the pO2 in atmospheric air. |
| Statement II: | pCO2 in alveolar air is less than the pCO2 in atmospheric air. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Respiratory System: Exchange of Gases |
79%
From NCERT
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Which of the following would not be correct regarding vital capacity in human lungs?
| 1. | It is the maximum volume of air a person can breathe in after a forced expiration. |
| 2. | It includes ERV, TV, RV and IRV |
| 3. | It can also be defined as the maximum volume of air a person can breathe out after a forced inspiration. |
| 4. | It can be calculated as the difference between total lung capacity and residual volume. |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
76%
From NCERT
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Identify the incorrect statement regarding respiratory organs:
| 1. | Lower invertebrates like sponges, coelenterates, flatworms, etc., exchange O2 with CO2 by simple diffusion over their entire body surface. |
| 2. | Earthworms use their moist cuticle as respiratory surface. |
| 3. | Insects have a network of tubes (tracheal tubes) to transport atmospheric air within the body. |
| 4. | All vertebrates use lungs as respiratory organs. |
Subtopic: Respiratory Organs |
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Trachea is a straight tube extending up to the mid-thoracic cavity, which divides into a right and left primary bronchi at the level corresponding to:
1. Seventh cervical vertebra
2. Second thoracic vertebra
3. Fifth thoracic vertebra
4. Seventh thoracic vertebra
1. Seventh cervical vertebra
2. Second thoracic vertebra
3. Fifth thoracic vertebra
4. Seventh thoracic vertebra
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
92%
From NCERT
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The conducting part of the human respiratory system:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | clears the air from foreign particles |
| II: | humidifies the air |
| III: | brings the air to body temperature. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
92%
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The cumulative thickness of the three layers of the diffusion [respiratory] membrane is:
1. less than 1 µm
2. less than 1mm
3. between 2 µm and 5 µm
4. between 2 mm and 5 mm
1. less than 1 µm
2. less than 1mm
3. between 2 µm and 5 µm
4. between 2 mm and 5 mm
Subtopic: Respiratory System: Exchange of Gases |
75%
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