| bifurcation | Split into two parts. A change in the stability or in the types of solutions which occurs as a parameter is varied in a dissipative dynamic system. The change can be seen as a bifurcation point in a graph of the parameter being varied vs. One of the properties of the solutions. (09 Oct 1997) |
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| bifurcation lymph nodes | Several large lymph nodes inferior to the tracheal bifurcation; they receive afferents from the bronchopulmonary nodes and the heart, and send efferents to the superior tracheobronchial and tracheal nodes. Synonym: nodi lymphatici tracheobronchiales inferiores, bifurcation lymph nodes, carinal lymph nodes. (05 Mar 2000) |
| bifurcation of aorta | The division of the aorta into right and left common iliac arteries; it occurs at the level of the fourth and fifth lumbar vertebral body. Synonym: bifurcatio aortae. (05 Mar 2000) |
| bifurcation of pulmonary trunk | The division of the pulmonary trunk into right and left pulmonary arteries. Synonym: bifurcatio trunci pulmonalis. (05 Mar 2000) |
| bifurcation of trachea | The division of the trachea into the right and left main bronchi; it occurs at the level of the fifth or sixth thoracic vertebral body and is marked internally by the presence of a carina or keel-like ridge between the diverging bronchi. Synonym: bifurcatio tracheae. (05 Mar 2000) |
| tracheal | Relating to the trachea. (05 Mar 2000) |
| tracheal branches | Branches to the trachea. Nomina Anatomica lists tracheal branches of 1) inferior thyroid artery (rami tracheales arteriae thyroideae inferioris ); and 2) recurrent laryngeal nerve (rami tracheales nervi laryngei recurrentis ). Synonym: rami tracheales. (05 Mar 2000) |
| tracheal cartilages | The 16 to 20 incomplete rings of hyaline cartilage forming the skeleton of the trachea; the rings are deficient posteriorly for from one-fifth to one-third of their circumference. Synonym: cartilagines tracheales, tracheal ring. (05 Mar 2000) |
| tracheal fenestration | A surgical procedure to create an epithelialised mucocutaneous opening from the neck into the trachea. (05 Mar 2000) |
| tracheal fistula | A form of fistula colli congenita. (05 Mar 2000) |
| tracheal glands | Numerous tubuloalveolar mixed glands located principally in the submucosa of the trachea; they open into the tracheal lumen through short ducts. Synonym: glandulae tracheales. (05 Mar 2000) |
| tracheal intubation | Passage of a tube through the nose, mouth, or a tracheotomy into the trachea for maintenance of patency of the airway. (05 Mar 2000) |
| tracheal lymph nodes | Nodes along the sides of the trachea in the neck and in the posterior mediastinum; receive drainage of superior (and inferior) tracheobranchial (nodes, trachea and oesophagus); drain to bronchomediastinal lymphatic trunk(s), thoracic duct. Synonym: nodi lymphatici paratracheales, tracheal lymph nodes. (05 Mar 2000) |
| tracheal mucosa | The inner mucous layer of the trachea. Synonym: tunica mucosa tracheae. (05 Mar 2000) |
| tracheal ring | The 16 to 20 incomplete rings of hyaline cartilage forming the skeleton of the trachea; the rings are deficient posteriorly for from one-fifth to one-third of their circumference. Synonym: cartilagines tracheales, tracheal ring. (05 Mar 2000) |