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Earn 100

Read following sentences carefully and select the incorrect one.
(a)During expiration, of expired air is more than alveolar air but less than atmospheric air
(b)During expiration, of expired air is less than of alveolar air and more than of atmospheric air
(c)Sum of partial pressure of all gases at sea level is
(d)The partial pressure of and in the systemic veins is same as that in pulmonary vein

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Important Questions on Breathing and Exchange of Gases
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Basic respiratory rhythm centre is located in

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The partial pressure of carbon dioxide in oxygenated blood is

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Total volume of air expired by a person forcefully after normal inspiration is known as

MEDIUM
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Match column- with column- and select the correct option.
Column- | Column- |
. Medulla oblongata | () Chemoreceptors |
. Pons varolii | () 'Switch-off' centre for breathing |
. Aortic arch and carotid arch | () Normal respiratory rhythm centre |

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Which of the following factors affect diffusion of gases between alveoli and blood through respiratory membrane?
a. Thickness of respiratory membrane
b. Partial pressure gradient of gases across diffusion membrane
c. Solubility of gases
Select the correct option.

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