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Q. No.Consider the given two statements:
| Assertion (A): | It is essential for breathing 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 lung (pulmonary) cavity. |
| Reason (R): | We cannot directly alter the pulmonary volume. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
78%
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The conducting part of the human respiratory system:
1. Only I and II are correct
2. Only II and IV are correct
3. Only I, II and III are correct
4. Only II, III and IV are correct
| I: | transports the atmospheric air to the alveoli |
| II: | clears inhaled air from foreign particles |
| III: | humidifies and also brings the air to body temperature |
| IV: | is the site of actual diffusion of O2 and CO2 between blood and atmospheric air |
1. Only I and II are correct
2. Only II and IV are correct
3. Only I, II and III are correct
4. Only II, III and IV are correct
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung | Respiratory System: Regulation of Respiration | Respiratory Organs |
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From NCERT
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Regarding pulmonary circulation in humans:
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: | Oxygen rich blood returns from the lungs to the heart through the pulmonary arteries. |
| II: | Oxygen poor blood leaves the heart and goes to the lungs through the pulmonary veins. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung | Respiratory System: Pulmonary Volumes & Capacities | Respiratory System: Exchange of Gases | Respiratory System: Regulation of Respiration |
80%
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Which of the following will give us the vital capacity of a human?
| 1. | Inspiratory Reserve Volume + Expiratory Reserve Volume |
| 2. | Inspiratory Reserve Volume - Expiratory Reserve Volume + Residual volume |
| 3. | Functional Residual Capacity + Tidal Volume |
| 4. | Total Lung Capacity – Residual volume |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
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Vital capacity is defined as:
| 1. | Total volume of air a person can inspire after a normal expiration. |
| 2. | Volume of air that will remain in the lungs after a normal expiration. |
| 3. | Total volume of air a person can expire after a normal inspiration. |
| 4. | The maximum volume of air a person can breathe in after a forced expiration |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
73%
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Which of the following will bring about inhalation?
| 1. | Contraction of diaphragm and contraction of external intercostal muscles |
| 2. | Relaxation of diaphragm and contraction of external intercostal muscles |
| 3. | Contraction of diaphragm and contraction of internal intercostal muscles |
| 4. | Relaxation of diaphragm and contraction of internal intercostal muscles. |
Subtopic: Mechanism of Breathing |
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From NCERT
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Inhalation is brought about by:
| 1. | Relaxation of the diaphragm and intercostal muscles |
| 2. | Contraction of the diaphragm and relaxation of intercostal muscles |
| 3. | Contraction of the diaphragm and intercostal muscles, decreasing thoracic volume |
| 4. | Contraction of the diaphragm and intercostal muscles, increasing thoracic volume |
Subtopic: Mechanism of Breathing |
86%
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Which of the following will bring about inhalation in human beings?
I. Contraction of diaphragm
II. Contraction of internal intercostals
III. Contraction of external intercostals
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Respiratory System: Pulmonary Ventilation |
67%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of
1. Residual Volume (RV)
2. Inspiratory Reserve Volume (IRV)
3. Tidal Volume (TV)
4. Expiratory Reserve Volume (ERV)
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
81%
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O2 and CO2 are exchanged by simple diffusion:
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: | at alveoli |
| II: | between blood and tissues |
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: Exchange of Gases |
88%
From NCERT
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