Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe). The trachea links the larynx to th

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Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe). The trachea links the larynx to the lungs. The lining consists of mucus-secreting goblet cells (one seen at centre, red) and epithelial cells (vertical) that are covered in cilia (hair-like). Mucus traps debris, such as dust particles or bacteria, in the inhaled air, while the beating of the cilia moves the mucus and particles upwards out of the respiratory tract. This helps to keep the lungs and airways clear and prevent infection. Magnification: x3000 when printed at 10 centimetres wide.

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Size: 4550px × 3912px
Photo credit: © STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: anatomical, anatomy, biological, biology, cell, cells, cilia, ciliated, cilium, colored, coloured, electron, epithelial, epithelium, false-colored, false-colour, false-coloured, gland, glands, glandular, goblet, layer, lining, membrane, micrograph, microscope, mucosal, mucous, pipe, protection, protective, respiratory, scanning, secretion, secretory, section, sectioned, sem, subjects, system, trachea, tract, wall, wind