A
In the given picture, 'A' represents
a. Rings of cartilage which ensure that the air passage does not
collapse while going into the lungs.
b. Diaphragm which contracts and flattens upon inhalation.
c. Alveoli where the exchange of gases can take place.
d. Fine hairs for air filtration.
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Answer:
where is picture sister
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Answer:
In the given picture,'A' represents rings of cartilage
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