Answer:
Present inside the nose and above the mouth it is regionated anteroposteriorly into vestibule, respiratory channel and olfactory organs. A cartilaginous nasal septum divides the vestibule into two lateral halves. The respiratory channel passes through scroll-like turbinal bones and passes by olfactory region into pharynx through a pair of posterior nare. It performs (i) filtration, (ii) air-conditioning and (iii) warming.
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