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प्रश्न
The figure given below shows a small part of human lung where exchange of gas 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.
विकल्प
A - Alveolar cavity - main site of exchange of respiratory gases
D - Capillary wall - exchange of gases takes place here
B - Red blood cell - transport of mainly haemoglobin
C - Arterial capillary - passes oxygen to tissues
MCQ
आकृति
उत्तर
A - Alveolar cavity - main site of exchange of respiratory gases
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