k Trachea lining, TEM Trachea lining. Transmission electron micrograph TEM of a longitudinal section through the lining of the trachea windpipe, which links the larynx voicebox to the lungs. The pseudostratified columnar epithelial lining consists of cells that have hairlike cilia long on their surface and mucussecreting glands not shown. Mucus 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. Magnification x7000 when printed 10 centimetres wide, by STEVE GSCHMEISSNERSCIENCE PHOTO LIBRARY Stock Photo - Afloimages
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Trachea lining, TEM Trachea lining. Transmission electron micrograph  TEM  of a longitudinal section through the lining of the trachea  windpipe , which links the larynx  voicebox  to the lungs. The pseudo stratified columnar epithelial lining consists of cells that have hair like cilia  long  on their surface and mucus secreting glands  not shown . Mucus 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. Magnification: x7000 when printed 10 centimetres wide, by STEVE GSCHMEISSNER SCIENCE PHOTO LIBRARY
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Trachea lining, TEM

Trachea lining. Transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs. The pseudo-stratified columnar epithelial lining consists of cells that have hair-like cilia (long) on their surface and mucus-secreting glands (not shown). Mucus 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. Magnification: x7000 when printed 10 centimetres wide, by STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

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