Nasal cavity, SEM

Nasal cavity, SEM

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This image is part of the feature Mystery of Smell

Credit: SUSUMU NISHINAGA/SCIENCE PHOTO LIBRARY

Caption: Nasal cavity. Coloured scanning electron micrograph (SEM) of the surface of the nasal cavity. It is covered in epithelial hair-like structures known as cilia (orange), which line the respiratory tract. They are covered with a wet, sticky mucus that humidifies inhaled air and traps dust particles and other air pollutants. Co-ordinated, wave-like beating of the cilia propels the mucus to the back of the nose (pharynx), where it is swallowed. Magnification: x1800 at 6x7cm size.

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Keywords: anatomy, cilia, ciliated, cilium, coloured, epidermal, epidermis, hair, hairs, hairy, human body, many, mucus, multiple, nasal cavity, nose, olfaction, olfactory sense, respiratory tract, scanning electron micrograph, sem, sensory, smell

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