| superior tracheobronchial lymph nodes | Several large lymph nodes of the posterior mediastinal group located superior to the bronchi at their union with the trachea; receives lymph from inferior tracheobronchial lymph nodes and bronchopulmonary nodes; drain to paratracheal nodes. Synonym: nodi lymphatici tracheobronchiales superiores. (05 Mar 2000) |
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| inferior tracheobronchial 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) |
| tracheobronchial | <ornithology, zoology> Pertaining both to the tracheal and bronchial tubes, or to their junction; said of the syrinx of certain birds. Source: Websters Dictionary (01 Mar 1998) |
| tracheobronchial diverticulum | The endodermal lung primordium which will give rise to the epithelial lining of the respiratory tract. Synonym: lung bud. (05 Mar 2000) |
| tracheobronchial dyskinesia | Degeneration of elastic and connective tissue of bronchi and trachea. (05 Mar 2000) |
| tracheobronchial groove | The depression in the floor of the caudal end of the pharynx, continued downward on the ventral wall of the foregut; from it are developed the lower part of the larynx and the trachea, bronchi, and lungs. Synonym: tracheobronchial groove. (05 Mar 2000) |
| glands of internal secretion | Ductless glands that secrete substances which are released directly into the circulation and which influence metabolism and other body functions. (12 Dec 1998) |
| cytocrine secretion | The transfer of secretory material from one cell to another, such as the transfer of melanin granules from melanocytes to epidermal cells. (05 Mar 2000) |
| secretion | 1. <physiology> The process of elaborating a specific product as a result of the activity of a gland, this activity may range from separating a specific substance of the blood to the elaboration of a new chemical substance. 2. Any substance produced by secretion. Origin: L. Secretio, from secernere = to secrete (09 Oct 1997) |
| secretion vector | <molecular biology> A DNA vector in which the protein product is both expressed and secreted (excreted) from the cell. (09 Oct 1997) |
| stimulus secretion coupling | A term used to describe the events that link receipt of a stimulus with the release of materials from membrane bounded vesicles (the analogy is with excitation contraction coupling in the control of muscle contraction). A classical example is the link between membrane depolarisation at the presynaptic terminal and the release of neurotransmitter into the synaptic cleft. (18 Nov 1997) |
| neurohumoral secretion | Transmission of a nerve impulse across a synapse or to an end-organ by secretion of a minute amount of a chemical transmitter such as acetylcholine. (05 Mar 2000) |
| syndrome of inappropriate secretion of antidiuretic hormone | Continued secretion of antidiuretic hormone despite low serum osmolality and expanded extracellular volume. (05 Mar 2000) |
| external secretion | A substance formed by a cell and transported outside the cell walls as a means of ridding the cell of the substance or as a messenger to affect the function of other cells. (05 Mar 2000) |