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Q. No.Consider the given two statements:
Assertion:
It is important that the anatomical setup of lungs in thorax is such that any change in the volume of the thoracic cavity will be reflected in the pulmonary cavity.
Reason:
We cannot directly alter the pulmonary volume.
1.
Assertion is true but Reason is false
2.
Both Assertion and Reason are true and the Reason correctly explains the Assertion
3.
Both Assertion and Reason are true but the Reason does not correctly explain the Assertion
4.
Assertion is false but Reason is true
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
71%
Level 2: 60%+
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Regarding the transport of oxygen and carbon dioxide in the human blood:
I: In the alveoli, where there is high pO2, low pCO2, lesser H+ concentration and lower temperature, the factors are all favourable for the formation of oxyhaemoglobin.
II: When the pCO2 is low and pO2 is high, more binding of carbon dioxide to haemoglobin occurs.
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: In the alveoli, where there is high pO2, low pCO2, lesser H+ concentration and lower temperature, the factors are all favourable for the formation of oxyhaemoglobin.
II: When the pCO2 is low and pO2 is high, more binding of carbon dioxide to haemoglobin occurs.
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: Transport of Gases |
79%
Level 2: 60%+
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Vital capacity of lung is
| 1. | IRV + ERV + TV | 2. | IRV + ERV |
| 3. | IRV + ERV + TV + RV | 4. | IRV + ERV + TV - RV |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
81%
Level 1: 80%+
NEET - 2023
Hints
Select the sequence of steps in respiration.
Choose the correct answer from the options given below:
| (A) | Diffusion of gases (O2 and CO2) across alveolar membrane |
| (B) | Diffusion of O2 and CO2 between blood and tissues |
| (C) | Transport of gases by the blood |
| (D) | Pulmonary ventilation by which atmospheric air is drawn in and CO2 rich alveolar air is released out |
| (E) | Utilisation of O2 by the cells for catabolic reactions and resultant release of CO2 |
| 1. | (D), (A), (C), (B), (E) | 2. | (C), (B), (A), (E), (D) |
| 3. | (B), (C), (E), (D), (A) | 4. | (A), (C), (B), (E), (D) |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
83%
Level 1: 80%+
NEET - 2023
Hints
Consider the two statements:
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
| Statement I: | Humans breathe by negative pressure. |
| Statement II: | The respiratory center is directly affected by low oxygen levels. |
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Subtopic: Respiratory System: Pulmonary Ventilation |
69%
Level 2: 60%+
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Favourable conditions for the oxygenation of haemoglobin at alveoli include all the following except:
1. High pO2
2. Low pCO2
3. Low pH
4. Low temperature
Subtopic: Respiratory System: Transport of Gases |
80%
Level 1: 80%+
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Contraction of diaphragm:
| 1. | increases the diameter of thorax in dorso-ventral axis and brings about inhalation |
| 2. | decreases the diameter of thorax in dorso-ventral axis and brings about exhalation |
| 3. | increases the diameter of thorax in antero-posterior axis and brings about inhalation |
| 4. | decreases the diameter of thorax in antero-posterior axis and brings about exhalation |
Subtopic: Respiratory System: Pulmonary Ventilation |
78%
Level 2: 60%+
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Consider the given two statements:
| Assertion (A): | The amount of CO2 that can diffuse through the diffusion membrane per unit difference in partial pressure is much higher compared to that of O2. |
| Reason (R): | Haemoglobin does not play any role in the transport of carbon dioxide in human blood. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Respiratory System: Exchange of Gases |
86%
Level 1: 80%+
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Inflammation of bronchi and bronchioles leading to difficulty in breathing is characteristically seen in:
| 1. | Bronchial asthma | 2. | Emphysema |
| 3. | Tuberculosis | 4. | Pneumonia |
Subtopic: Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
86%
Level 1: 80%+
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The maximum volume of air a person can breathe out after a forced inspiration is called as:
| 1. | Functional residual capacity | 2. | Vital capacity |
| 3. | Expiratory reserve volume | 4. | Residual volume |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
70%
Level 2: 60%+
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