Trachea

The tube that connects the nasal passages to the lungs.


The main air passage which runs from the larynx to the lungs, where it divides into the two main bronchi. It is about 10 cm long, and is formed of rings of cartilage and connective tissue.


Tube extending from the larynx to the bronchi that conveys air to the lungs. It is about 4 inches (11 centimeters) long, covered in the front by the isthmus of the thyroid gland, and in contact in the back with the esophagus. Also called windpipe.


Inflammation of the trachea, resulting from infection, irritation, or allergic reaction.


A round cartilaginous structure of the upper airway that extends from the larynx to the bronchiole tubes.


The windpipe, the airway that connects the pharynx (throat) with the bronchi, the two major tubes leading into the lungs. The trachea is about 4 inches long and slightly less than an inch in diameter. It begins at the larynx (voice box) and can be felt just under the skin below the larynx as a hard, ringed pipe. These rings are C- shaped cartilages that keep the trachea open and protect the airway against damage. The open area of the C-rings faces back toward the esophagus and is spanned by smooth muscle. This structure allows the trachea to stay open even as it flexes during swallowing. The interior of the trachea is lined with mucous membrane that helps trap tiny particles in inhaled air, thereby keeping the lungs and airway open.


Popularly known as the windpipe, this tube extends from the larynx above to the point in the upper part of the chest, where it divides into the two large bronchial tubes, one to each lung. It is about 10 cm (4 inches) in length and consists of a fibrous tube kept permanently open by about 20 strong, horizontally placed hoops of cartilage, each of which forms about two-thirds of a circle, the two ends being joined behind by muscle-fibres. This fibrocartilaginous tube is lined by a smooth mucous membrane, richly supplied with mucous glands and covered by a single layer of ciliated epithelium.


The portion of the respiratory tract that carries air through the neck and upper chest. The trachea runs in the midline of the neck along the front of the esophagus. It is a fibrocartilaginous tube, 9 to 15 cm long, extending from the larynx (at the level of vertebra C6) into the thorax, where, at the level of the sternal angle, it divides into the right and left main (primary) bronchi. The 15 to 20 stacked rings of cartilage composing the skeleton of the trachea are incomplete circles: they are C-shaped with the opening along the back wall of the trachea. The membranes that connect the tracheal rings are elastic, and the whole trachea can bend and stretch. The trachea is lined with a mucosa made of ciliated epithelium that sweeps mucus, trapped dust, and pathogens upward.


The long tube that carries air from the larynx to the lungs; also called the windpipe.


The airway that leads from the larynx to the lungs. Also called the windpipe.


The trachea, a cylindrical structure originating beneath the larynx, extends into the thoracic region, dividing into two separate passages known as bronchi, which lead to each lung.


The airway, also known as the trachea or windpipe, extends from just below the larynx (voicebox) to the area behind the upper portion of the sternum (breastbone), where it splits to create the bronchi.


Comprising fibrous, elastic tissue, and smooth muscle, the trachea also includes approximately 20 rings of cartilage that contribute to maintaining its openness. The lining of the trachea features specialized cells known as goblet cells, responsible for mucus secretion, and cells equipped with cilia, which are hair-like structures that move the mucus upward, aiding in keeping the lungs and airways free from obstructions.


One of the more prevalent tracheal disorders is tracheitis, involving inflammation of the lining, typically triggered by an infection, often a viral one, and commonly linked with bronchitis or laryngitis. Blockage of the trachea due to inhaled foreign objects is rare, as the narrowest point in the upper respiratory tract is the larynx, and objects passing through it usually continue through the trachea as well. Nevertheless, tracheal obstruction can arise from a tumor or constriction resulting from scarring caused by a tracheostomy tube, inserted to create an artificial air passage through the front of the neck.


Occasionally, a congenital anomaly arises in which an unusual passage develops between the trachea and the esophagus, situated directly behind it.


The flexible tube that stretches from the larynx to the bronchi, acting as the airway for moving air into and out of the lungs, commonly known as the windpipe.


 


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