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In addition, mucus aids in moisturizing the inhaled air and prevents tissues such as the nasal and airway epithelia from drying out. [11] Mucus is produced continuously in the respiratory tract. Mucociliary action carries it down from the nasal passages and up from the rest of the tract to the pharynx, with most of it being swallowed ...
The pharynx (pl.: pharynges) is the ... Polyps or mucus can obstruct the nasopharynx, ... the pyriform sinus, postcricoid area, and the posterior pharyngeal wall.
Mucous membranes line the digestive, respiratory and reproductive tracts and are the primary barrier between the external world and the interior of the body; in an adult human the total surface area of the mucosa is about 400 square meters while the surface area of the skin is about 2 square meters.
These hairs, called vibrissae, are thicker than body hair and effectively block larger particles from entering the respiratory tract. They also increase the surface area for particle deposition, improving the nose's ability to filter pathogens. [15] The cough reflex expels all irritants within the mucous membrane to the outside. The airways of ...
It is continuous with the skin through the nostrils, and with the mucous membrane of the nasal part of the pharynx through the choanae. From the nasal cavity its continuity with the conjunctiva may be traced, through the nasolacrimal and lacrimal ducts ; and with the frontal , ethmoidal , sphenoidal , and maxillary sinuses , through the several ...
Mucus is a substance that covers the moist surfaces of your body, like your eyes, nostrils, lungs and gastrointestinal tract, according to the National Institutes of Health (NIH). Mucus has ...
Chest congestion is usually caused by excess mucus in the airways, says Meilan King Han, M.D., M.S., professor of medicine and chief of the Division of Pulmonary and Critical Care at the ...
Accumulated mucus in the airways resulting from impaired mucociliary clearance, that may involve mucus hypersecretion. Effective mucociliary clearance depends on a number of factors including the numbers of cilia, and their structure particularly their height, and the quality of the mucus produced that needs to be maintained at a correct ...