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Q. No.Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:
1. Inspiratory Reserve Volume
2. Tidal Volume
3. Expiratory Reserve Volume
4. Residual Volume
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
87%
From NCERT
NEET - 2017
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In the regulation of respiration, a chemosensitive area adjacent to the rhythm centre in the medulla region of the brain, is highly sensitive to:
1. \(HCO^-_3\)
2. \(CO_2\)
3. \(O_2\)
4. \(N_2\)
Subtopic: Respiratory System: Regulation of Respiration |
80%
From NCERT
NEET - 2022
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Identify the wrong statement with reference to transport of oxygen:
| 1. | Partial pressure of CO2 can interfere with O2 binding with haemoglobin. |
| 2. | Higher H+ concentration in alveoli favours the formation of oxyhaemoglobin. |
| 3. | Low pCO2 in alveoli favours the formation of oxyhaemoglobin. |
| 4. | Binding of oxygen with haemoglobin is mainly related to partial pressure of O2. |
Subtopic: Respiratory System: Transport of Gases Part 1 | Respiratory System: Transport of Gases |
82%
From NCERT
NEET - 2020
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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 |
81%
From NCERT
NEET - 2023
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Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls.
| 1. | Pleurisky | 2. | Emphysema |
| 3. | Pneumonia | 4. | Asthma |
Subtopic: Respiratory Disorders: Part 2 |
90%
From NCERT
NEET - 2015
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Match the items given Column I with those in Column II and select the correct option given below:
| Column I | Column II | ||
| (a) | Tidal volume | (i) | 2500-3000 mL |
| (b) | Inspiratory Reserve | (ii) | 1100-1200 mL volume |
| (c) | Expiratory Reserve | (iii) | 500-550 mL volume |
| (d) | Residual volume | (iv) | 1000-1100 mL |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (ii) | (i) | (iv) |
| 2. | (iii) | (i) | (iv) | (ii) |
| 3. | (i) | (iv) | (ii) | (iii) |
| 4. | (iv) | (iii) | (ii) | (i) |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
86%
From NCERT
NEET - 2018
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Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because?
| 1. | there is a negative pressure in the lungs |
| 2. | there is a negative intrapleural pressure pulling at the lung walls |
| 3. | there is a positive intrapleural pressure |
| 4. | pressure in the lungs is higher than the atmospheric pressure |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
58%
From NCERT
NEET - 2016
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Match the following columns and select the correct option:
| Column I | Column II | ||
| (a) | Pneumotaxic Centre | (i) | Alveoli |
| (b) | O2 Dissociation curve | (ii) | Pons region of the brain |
| (c) | Carbonic Anhydrase | (iii) | Haemoglobin |
| (d) | Primary site of exchange of gases | (iv) | R.B.C. |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (i) | (iii) | (ii) | (iv) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (iii) | (ii) | (iv) | (i) |
| 4. | (iv) | (i) | (iii) | (ii) |
Subtopic: Respiratory System: Exchange of Gases | Respiratory System: Regulation of Respiration |
94%
From NCERT
NEET - 2020
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The amount of air moved in and out of the lungs with each normal resting breath is the
1. vital capacity
2. residual capacity
3. vital volume
4. tidal volume
1. vital capacity
2. residual capacity
3. vital volume
4. tidal volume
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
90%
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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