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Anatomy and Physiology of the Nose

What is the nose?

The nose is the organ involved in smell and breathing. It is located in the middle of the face. The internal part of the nose lies above the roof of the mouth.

The nose consists of:



What are sinuses?

The sinuses are cavities, or air-filled pockets inside the face, near the nasal passages. As in the nasal passages, the sinuses are lined with mucous membranes. There are four sinuses:




Reviewed by: Steven D. Handler, MD, MBE
Date: April 2009

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