Trachea lining, SEM C013 / 7121
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Trachea lining, SEM C013 / 7121
Trachea lining. Coloured scanning electron micrograph (SEM) of a section through the wall of a trachea (wind pipe), showing the ciliated epithelial cells. The trachea links the larynx to the lungs. The epithelial lining consists of mucus-secreting glands (not shown) and cells 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: x6000 when printed at 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9198649
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Cilia Ciliated Cilium Colored Epithelial Epithelium Lining Mucosal Layer Protection Protective Respiratory Tract Secretion Subjects System Trachea Tract Wall Wind Pipe Cells Section Sectioned
EDITORS COMMENTS
This print showcases the intricate lining of a trachea, captured through a colored scanning electron microscope (SEM). The image reveals the remarkable structure and function of ciliated epithelial cells that make up this vital respiratory tract. The trachea, commonly known as the windpipe, serves as a crucial link between the larynx and lungs. Its epithelial lining consists of specialized cells covered in hair-like structures called cilia. These cilia play a pivotal role in maintaining our respiratory health by facilitating mucus movement. As we breathe in, mucus-secreting glands within the tracheal wall produce sticky mucus that traps debris like dust particles or bacteria present in the air. Simultaneously, the rhythmic beating motion of countless cilia propels this trapped mucus upwards and outwards from our respiratory system. By effectively clearing away foreign substances and potential pathogens from our airways, this mechanism helps to keep our lungs and entire respiratory tract free from infection. It is an essential defense mechanism designed to protect our delicate lung tissues. At a magnification level of x6000 when printed at 10 centimeters wide, this SEM image provides us with an awe-inspiring glimpse into one aspect of human biology - highlighting both its complexity and elegance simultaneously.
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