Nose Structure

The vestibule is lined by a stratified squamous epithelium bearing stiff straight hairs, sebaceous glands and sweat glands. The remainder of the nasal cavity, apart from the small olfactory area, bears tall columnar ciliated cells interspersed with mucus-secreting goblet cells, and forms a continuous epithelial sheet with the mucosa of the nasal sinuses. Beneath the epithelium is a highly vascular connective tissue containing copious lymphoid aggregates and carrying mucous and serous glands. The mucous membrane is thick and velvety over the greater part of the nasal septum and over the conchae.

However, it is thin over the septum immediately within the vestibule (where the blood vessels of Little’s area show through the mucosa) and also over the meati and the floor of the nose. The mucosa of the nose and its accessory sinuses is closely adherent to theunderlying periosteum or perichondrium; surgically,  the two layers strip away together and are termed the mucoperiosteum.

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