Last Updated On [03-11-2023]
The total thickness of the diffusion membrane of alveolus capillary is
a)
Less than 1 cm
b)
Less than 2 cm
c)
Less than 1 mm
d)
More than 1 mm
The total thickness of the diffusion membrane of alveolus capillary is
a)
Less than 1 cm
b)
Less than 2 cm
c)
Less than 1 mm
d)
More than 1 mm
Question ID - 2700 :-
The total thickness of the diffusion membrane of alveolus capillary is
a)
Less than 1 cm
b)
Less than 2 cm
c)
Less than 1 mm
d)
More than 1 mm
|
The total thickness of the diffusion membrane of alveolus capillary is |
|||||||
|
a) |
Less than 1 cm |
b) |
Less than 2 cm |
c) |
Less than 1 mm |
d) |
More than 1 mm |
(c)
The total thickness of the diffusion membrane is less than 1 milimeter.
The diffusion membrane is made up of three major layers (figure) namely, the thin squamous epithelium of alveoli, the endothelium of alveolar capillaries and the basement substance in between them. However, its total thickness is much less than a millimeter. Therefore, all the factors in our body are favourable for the diffusion of 
from alveoli to tissues and that of 
from the tissues to alveoli
Next Question :
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Which fact suggests that most oxygen is transported from lungs to the tissues combined with haemoglobin rather than dissolved in blood plasma? |
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|
a) |
Oxygen carrying capacity of whole blood is much higher than that of plasma and oxygen content of blood leaving the lungs is greater than that of blood entering the lungs |
|
b) |
Haemoglobin can combine with oxygen |
|
c) |
Oxyhaemoglobin can dissociate into haemoglobin and oxygen |
|
d) |
Increase in carbon dioxide concentration decreases the oxygen affinity of haemoglobin |
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