In humans, the process of respiration involves the following steps:
A. Diffusion of gases across alveolar membrane
B. Diffusion of gases between blood and tissues
C. Transport of gases by blood
D. Utilisation of \(O_2\) by the cells for catabolic reactions
E. Breathing or pulmonary ventilation
Choose the correct sequence of steps from the options given below:
1. A →E→B→C→D
2. C →E→A→B→D
3. B →D→C→E→A
4. E →A→C→B→D

Subtopic:  Respiratory Organs |
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From NCERT
NEET - 2024
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Match List-I with List-II
List-I List-II
A. Emphysema  I. Proliferation of fibrous tissues
B.  Asbestosis II. Alveolar walls are damaged and respiratory surface is decreased
C. Asthma III.  Serious lung damage 
D.  Fibrosis IV.  Difficulty in breathing due to inflammation of bronchi and bronchioles 

Choose the correct answer from the options given below:
1. A-I, B-III, C-IV, D-II
2. A-II, B-III, C-IV, D-I
3. A-IV, B-III, C-II, D-I
4. A-I, B-II, C-IV, D-III
Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
 89%
NEET - 2024
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Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli? 
1. High \(\mathrm{pO}_2\) and Lesser \(\mathrm{H}^{+}\) concentration 
2. Low \(\mathrm{pCO}_2\) and High \(\mathrm{H}^{+}\) concentration 
3. Low \(\mathrm{pCO}_2\) and High temperature 
4. High \(\mathrm{pO}_2\) and High \(\mathrm{pCO}_2\)
Subtopic:  Respiratory System: Transport of Gases Part 1 |
 84%
From NCERT
NEET - 2024
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Match List I with List II: 
List I List II
1.  Expiratory capacity  I. Expiratory reserve volume + Tidal volume + Inspiratory reserve volume 
2.  Functional residual capacity  II.  Tidal volume + Expiratory reserve volume 
3.  Vital capacity  III.  Tidal volume + Inspiratory reserve volume 
4. Inspiratory capacity  IV.   Expiratory reserve volume + Residual volume 

Choose the correct answer from the options given below: 
1. A-III, B-II, C-IV, D-I
2. A-II, B-I, C-IV, D-III
3. A-I, B-III, C-II, D-IV
4. A-II, B-IV, C-I, D-III
Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 77%
From NCERT
NEET - 2024
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Match List-I with List-II:
List-I List-II
A. Residual volume I. Maximum volume of air that can be breathed in after forced expiration
B. Vital capacity II. Volume of air inspired or expired during normal respiration
C. Expiratory capacity III. Volume of air remaining in lungs after forcible expiration
D. Tidal Volume IV. Total volume of air expired after normal inspiration
Choose the correct answer from the options given below:
1. A-IV,B-III,C-II,D-I
2. A-II,B-IV,C-I,D-III
3. A-III,B-I,C-IV,D-II
4. A-I,B-II,C-III,D-IV 
Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
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From NCERT
NEET - 2024
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Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion (A): During the transporation of gases, about 20-25 percent of CO2 is carried by haemoglobin as carbamino-haemoglobin.
Reason (R): This binding is related to high pCO2 and low pO2 in the tissues

In the light of the above statements, choose the correct answer from the options given below.
1.  (A) is True but (R) is False.
2.  (A) is False but (R) is True.
3.  Both (A)and (R) are True and (R) is the correct explanation of (A).
4.  Both (A) and (R) are True but (R) is not the correct explanation of (A).
Subtopic:  Respiratory System: Transport of Gases |
 57%
From NCERT
NEET - 2024
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Select the sequence of steps in respiration.
(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

Choose the correct answer from the options given below:
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 |
 78%
From NCERT
NEET - 2023
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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 |
 79%
From NCERT
NEET - 2023
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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 |
 84%
From NCERT
NEET - 2022
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Which of the following statements are correct with respect to vital capacity?
(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.

Choose the most appropriate answer from the options given below:
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 |
 73%
From NCERT
NEET - 2022
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