Trachea lining, TEM

Trachea lining, TEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Trachea lining. Coloured transmission electron micrograph (TEM) of a transverse section through the lining of the trachea (windpipe). The trachea links the larynx to the lungs. The epithelial lining consists of cells that have hair-like cilia (turquoise) on their surface and mucus-secreting glands. Mucus (brown) secreted by the glands 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, helping to keep the lungs and airways clear and prevent infection.

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Keywords: anatomical, anatomy, biological, biology, cilia, cilium, coloured, false-coloured, glands, human body, images, lining, magnified image, microscopic subjects, microvilli, microvillus, mucous cell, mucus, mucus-secreting, respiratory system, secretory, secretory gland, section, tem, trachea, transmission electron microscope, transverse section, wind pipe

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