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Encyclopedia > Vertebrate trachea
Vertebrate trachea
Conducting passages.
Laryngoscopic view of interior of larynx. (Trachea labeled at bottom.)
Gray's subject #237 1084
Artery tracheal branches of inferior thyroid artery
MeSH Trachea

The tracheartes, or windpipe, is a tube that has an inner diameter of about 20-25 mm and a length of about 10-16cm. It extends from the larynx to the primary (main) bronchi in mammals, and from the pharynx to the syrinx in birds, allowing the passage of air to the lungs. It is lined with pseudostratified ciliated columnar epithelium cells with mucosae goblet cells which produce mucus. This lines the cells of the trachea to trap inhaled foreign particles which the cilia then waft upwards towards ther larynx and then the pharynx where it can then be swallowed into the stomach. Windpipe could refer to several topics: The trachea, a tube extending from the larynx to the bronchi in mammals, and from the pharynx to the syrinx in birds, carrying air to the lungs. ... Image File history File links Illu_conducting_passages. ... Image File history File links Gray1204. ... Section of an artery For other uses, see Artery (disambiguation). ... The tracheal branches of inferior thyroid artery are distributed upon the trachea, and anastomose below with the bronchial arteries. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... The larynx (plural larynges), colloquially known as the voicebox, is an organ in the neck of mammals involved in protection of the trachea and sound production. ... A bronchus (plural bronchi, adjective bronchial) is a caliber of airway in the respiratory tract that conducts air into the lungs. ... Subclasses & Infraclasses Subclass †Allotheria* Subclass Prototheria Subclass Theria Infraclass †Trituberculata Infraclass Metatheria Infraclass Eutheria Mammals (class Mammalia) are warm-blooded, vertebrate animals characterized by the presence of sweat glands, including those that produce milk, and by the presence of: hair, three middle ear bones used in hearing, and a neocortex... The pharynx (plural: pharynges) is the part of the neck and throat situated immediately posterior to the mouth and nasal cavity, and cranial, or superior, to the esophagus, larynx, and trachea. ... Syrinx is the name for the vocal cords of birds. ... For other uses, see Bird (disambiguation). ... Look up air in Wiktionary, the free dictionary. ... The heart and lungs (from an older edition of Grays Anatomy) The lung is an organ belonging to the respiratory system and interfacing to the circulatory system of air-breathing vertebrates. ... Transverse section of tracheal tissue. ... Drawing of the structure of cork as it appeared under the microscope to Robert Hooke from Micrographia which is the origin of the word cell being used to describe the smallest unit of a living organism Cells in culture, stained for keratin (red) and DNA (green) The cell is the... Goblet cells are glandular simple columnar epithelial cells whose sole function is to secrete mucus. ... The larynx (plural larynges), colloquially known as the voicebox, is an organ in the neck of mammals involved in protection of the trachea and sound production. ... The pharynx (plural: pharynges) is the part of the neck and throat situated immediately posterior to the mouth and nasal cavity, and cranial, or superior, to the esophagus, larynx, and trachea. ... In anatomy, the stomach is a bean-shaped hollow muscular organ of the gastrointestinal tract involved in the second phase of digestion, following mastication. ...


In humans there are about 15 – 20 incomplete C-shaped cartilaginous rings which reinforces the anterior and lateral sides of the trachea to protect and maintain the airway open. There is a piece of smooth muscle connecting the ends off the incomplete cartilaginous rings called the Trachealis muscle. This contracts reducing the size of the lumen of the trachea to increase the air flow rate during coughing. The esophagus lies posteriorly to the trachea. The cartilaginous rings are incomplete because this allows the trachea to collapse slightly to allow food to pass down the esophagus. The epiglottis is the flap that closes the trachea during swallowing to prevent swallowed matter from entering the trachea. The cartilages of the trachea (or tracheal rings) vary from sixteen to twenty in number: each forms an imperfect ring, which occupies the anterior two-thirds or so of the circumference of the trachea, being deficient behind, where the tube is completed by fibrous tissue and unstriped muscular fibers. ... Cultured Smooth muscle of the aorta. ... The esophagus (also spelled oesophagus/Å“sophagus, Greek ), or gullet is an organ in vertebrates which consists of a muscular tube through which food passes from the pharynx to the stomach. ... The esophagus (also spelled oesophagus/Å“sophagus, Greek ), or gullet is an organ in vertebrates which consists of a muscular tube through which food passes from the pharynx to the stomach. ... The epiglottis is a lid-like flap of fibrocartilage tissue covered with a mucus membrane, attached to the root of the tongue. ...


Clinical significance

Endotracheal intubation is the medical procedure of inserting an artificial tube into the trachea to provide a secure route for ventilating the lungs. This article or section needs copy editing for grammar, style, cohesion, tone and/or spelling. ... Ventilation good and very bad Ventilation is air circulation of air, typically between a room, a tunnel, etc. ...


Tracheotomy is a surgical procedure of making an opening in the front of the neck that extends to the lumen of the trachea, a short tube called a tracheostomy tube is inserted through this opening, entering below the level of the larynx and vocal cords. Completed tracheotomy: 1 - Vocal cords 2 - Thyroid cartilage 3 - Cricoid cartilage 4 - Tracheal cartilages 5 - Balloon cuff A tracheotomy is a procedure performed by paramedics, emergency physicians and surgeons in order to secure an airway. ... Lumen can mean: Lumen (unit), the SI unit of luminous flux Lumen (anatomy), the cavity or channel within a tubular structure Thylakoid lumen, the inner membrane space of the chloroplast 141 Lumen, an asteroid discovered by the French astronomer Paul Henry in 1875 Lumen (band), an American post-rock band... The larynx (plural larynges), colloquially known as the voicebox, is an organ in the neck of mammals involved in protection of the trachea and sound production. ... Laryngoscopic view of the vocal folds. ...


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