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Nasal cavity, SEM
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Nasal cavity, SEM
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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Media ID 6422248
© SUSUMU NISHINAGA/SCIENCE PHOTO LIBRARY
Cilia Ciliated Cilium Epidermal Epidermis Hair Hairs Hairy Mucus Nasal Cavity Nose Olfaction Respiratory Tract Sensory Smell
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This print from Science Photo Library offers a mesmerizing glimpse into the intricate world of our nasal cavity. In this colored scanning electron micrograph (SEM), we are presented with a close-up view of the surface of the nasal cavity, revealing an astonishingly complex network of tiny structures. The focal point of this image is undoubtedly the vibrant orange cilia that densely cover the respiratory tract lining. These hair-like structures play a crucial role in maintaining our respiratory health by performing multiple functions simultaneously. Not only do they act as sensory receptors for our olfactory sense, enabling us to perceive various scents and smells, but they also serve as guardians against harmful air pollutants. Coordinated in their movements, these cilia beat rhythmically in wave-like motions to propel a wet and sticky mucus towards the back of our nose or pharynx. This process not only humidifies inhaled air but also effectively traps dust particles and other airborne contaminants before being swallowed. At a magnification level of x1800 on a 6x7cm size scale, this SEM photograph showcases the remarkable complexity hidden within such seemingly ordinary body parts. It reminds us once again how intricately designed and interconnected every aspect of our human body truly is.
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