Q. Where does the exchange of gases takes place in humans?
Solution:
Alveoli – Delicate air sacs, elastic in nature. The exchange of gases takes place here.
Nasal cavity – The cavity which connects the nostrils with the pharynx.
Bronchiole – The terminal branches of bronchi that open to the alveoli. There are no cartilaginous rings in the bronchioles.
Bronchus – Branches of trachea which enter the lungs, supported by cartilaginous bronchial rings.
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