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The figure given below shows a small part of human lung where exchange of gases takes place.In Which one of the options given below, the one part A, B, C and D is identified along with its function.
Option: 1
C : arterial capillary - passes oxygen to tissues
Option: 2
A: alveolar cavity - main site of exchange of respiratory gases
Option: 3
D : capillary wall - exchange of and
takes place here
Option: 4
B : red blood cell - transport of mainly
Answers (1)
The given diagram is a section of an alveolus with a pulmonary capillary.
A is the alveolar cavity which is the main site for exchange of gases. B are the red blood cells in capillaries. C is the membrane of capillary and D is the basement membrane between the alveolar membrane and capillary. Thus, the correct answer is option b.
View full answer
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