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Q. No.Arrange in the correct sequence in respect of respiration:
A.
Breathing or pulmonary ventilation by which air is drawn in and CO2 rich air is released out
B.
Diffusion of O2 and CO2 between blood and tissue
C.
Transport of gases by the blood
D.
Diffusion of O2 and CO2 across alveolar membrane
E.
Utilization of O2 by the cells for catabolic reactions and resultant release of CO2
Choose the correct answer from the options given below:
1. A > B > C > D > E
2. A > C > D > B > E
3. D > B > C > E > A
4. A > D > C > B > E
Subtopic: Respiratory System: Pulmonary Ventilation |
73%
From NCERT
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Which of the following statements are correct with respect to vital capacity?
Choose the most appropriate answer from the options given below:
| (a) | It includes ERV, TV and IRV |
| (b) | Total volume of air a person can inspire after a normal expiration |
| (c) | The maximum volume of air a person can breathe in after forced expiration |
| (d) | It includes ERV, RV and IRV. |
| (e) | The maximum volume of air a person can breathe out after a forced inspiration. |
| 1. | (b), (d) and (e) | 2. | (a), (c) and (d) |
| 3. | (a), (c) and (e) | 4. | (a) and (e) |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
74%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
Identify the region of human brain which has pneumotaxic centre that alters respiratory rate by reducing the duration of inspiration.
| 1. | Medulla | 2. | Pons |
| 3. | Thalamus | 4. | Cerebrum |
Subtopic: Respiratory System: Regulation of Respiration |
85%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
The given figure shows the diagrammatic view of human respiratory system (sectional view of the left lung is also shown). Regarding the parts labelled as P, Q, R and S, which of the following statements are true?
| I: | P is an incomplete cartilaginous ring seen only in trachea and principal bronchus. |
| II: | Q is the point where the trachea divides into a right and left primary bronchus and corresponds to the level of 5th thoracic vertebra. |
| III: | R shows the double-layered pleura where the outer pleural membrane is in close contact with the thoracic lining. |
| IV: | S is pleural cavity with minimal amount of pleural fluid which reduces friction on the lung surface. |
| 1. Only I, II and III | 2. Only I, III and IV |
| 3. Only II, III and IV | 4. I, II, III and IV |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
53%
From NCERT
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NEET 2025 - Target Batch
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The figure shows the events happening during the inhalation and exhalation phases of pulmonary ventilation. Read the two given statements carefully.
| I: | A shows the inhalation phase brought about by the contraction of diaphragm that increases the volume of thorax in antero-posterior axis and by the contraction of external intercostal muscle that increases the volume of thorax in dorso-ventral axis. |
| II: | B shows the exhalation phase brought about by the relaxation of diaphragm that decreases the volume of thorax in antero-posterior axis and by the contraction of internal intercostal muscle that decreases the volume of thorax in dorso-ventral axis. |
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: Pulmonary Ventilation |
58%
From NCERT
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The figure shows pulmonary volumes as measured on a spirometer. Which of the following will be true?
| I: | A+B = Inspiratory Reserve Volume |
| II: | C+D = Functional Residual Capacity |
| III: | B+C = Tidal Volume |
| IV: | [(A+B+C+D) – (A+B+C)] = Residual Volume |
2. Only II and IV are correct
3. Only I and III are correct
4. I, II, III and IV are correct
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
67%
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| I: | The partial pressures of Oxygen and Carbon dioxide at Point A in Figure I correspond to that of Point P in Figure II. |
| II: | The partial pressure of Carbon dioxide at Point B in Figure I corresponds to that of Point Q in Figure II. |
| 1. Only I is true | 2. Only II is true |
| 3. I and II are true | 4. I and II are false |
Subtopic: Respiratory System: Exchange of Gases |
68%
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NEET 2025 - Target Batch
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Study the given figure showing the neural regulation of respiration in humans and select the correct statements from the given statements.
| Statement I: | The location of the pneumotaxic centre is the Pons of the brain stem and it moderates the function of respiratory rhythm centre. |
| Statement II: | The respiratory rhythm centre is the dorsal respiratory group shown in the figure and is also located in the Pons of the brain stem. |
1. Only Statement I is true
2. Only Statement II is true
3. Both Statement I and Statement II are true
4. Both Statement I and Statement II are false
Subtopic: Respiratory System: Regulation of Respiration |
60%
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NEET 2025 - Target Batch
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Study the oxygen-haemoglobin dissociation curve given in the figure and select the correct statements regarding it:
.svg)
| I: | The p50 is the pressure at which haemoglobin is 50% saturated which corresponds to about 27 mmHg on the X-axis. |
| II: | A right shift of the curve means haemoglobin holds less tightly onto oxygen and delivers more oxygen to the tissues at a given arterial oxygen pressure. |
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false
Subtopic: Respiratory System: Transport of Gases |
65%
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NEET 2025 - Target Batch
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Identify the respiratory disorder shown in the figure above:
1. Bronchial asthma
2. Emphysema
3. Pneumoconiosis [occupational lung disease]
4. Tuberculosis
Subtopic: Respiratory Disorders: Part 1 |
84%
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