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 partial pressure of oxygen in the alveoli of the lungs is:

1. equal to that in the blood

2. more than that in the blood

3. less than that in the blood

4. less than that of carbon dioxide

Subtopic:  Respiratory System: Exchange of Gases |
 87%
From NCERT
NEET - 2016
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The figure given below shows a small part of the human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function?

    59000
1. A – Alveolar cavity – main site of exchange of respiratory gases
2. D – Capillary wall – exchange of Oand CO2 takes place here
3. B – Red blood cell –  transport of CO2 mainly.
4. C – Arterial capillary – passes oxygen to tissues
Subtopic:  Respiratory System: Exchange of Gases |
 81%
From NCERT
AIPMT - 2011
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Transport of gases in alveoli takes place by:

1. Active transport 2. Passive transport
3. Simple diffusion 4. None of the above
Subtopic:  Respiratory System: Exchange of Gases |
 86%
From NCERT
AIPMT - 1998
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