| isthmus of eustachian tube | The narrowest portion of the auditory tube at the junction of the cartilaginous and bony portions. Synonym: isthmus tubae auditivae, isthmus of eustachian tube. (05 Mar 2000) |
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| isthmus of uterine tube | The narrow portion of the uterine tube adjoining the uterus. Synonym: isthmus tubae uterinae. (05 Mar 2000) |
| O'Dwyer's tube | A metal tube formerly used for intubation of the larynx in diphtheria. (05 Mar 2000) |
| orotracheal tube | A tracheal tube inserted through the mouth. (05 Mar 2000) |
| otopharyngeal tube | A tube leading from the tympanic cavity to the nasopharynx; it consists of an osseous (posterolateral) portion at the tympanic end, and a fibrocartilaginous (anteromedial) portion at the pharyngeal end; where the two portions join, in the region of the sphenopetrosal fissure, is the narrowest portion of the tube (isthmus); the auditory tube enables equalization of pressure within the tympanic cavity with ambient air pressure, referred to commonly as "popping of the ears". Synonym: tuba auditiva, tuba auditoria, eustachian tube, guttural duct, otopharyngeal tube, otosalpinx, pharyngotympanic tube, salpinx, tuba acustica, tuba eustachiana, tuba eustachii. (05 Mar 2000) |
| test tube | A tube of thin glass closed at one end, used in the examination of urine and other chemical operations, for bacterial cultures, etc. (05 Mar 2000) |
| test-tube baby | Popular term for a baby born after uterine implantation of a maternal ovum fertilised in vitro. (05 Mar 2000) |
| ear tube surgery | The removal of fluid (often infected) from the middle ear space by creating a incision in the eardrum. Ear tubes may be placed to maintain chronic drainage for several months. Indicated in cases of chronic or recurrent otitis media. (27 Sep 1997) |
| thoracostomy tube | A tube placed through the heart wall that drains the pleural space. (05 Mar 2000) |
| ectoplasmic tube contraction | <cell biology> Model for amoeboid movement in which it is proposed that protrusion of a pseudopod is brought about by contraction of the sub plasmalemmal region everywhere else in the cell thus squeesing the central cytoplasm forwards. See: frontal zone contraction theory. (18 Nov 1997) |
| Tovell tube | An armored tracheal tube with a wire spiral embedded in the wall to prevent obstruction of the lumen when the tube is compressed and kinking when the tube is bent at a sharp angle. (05 Mar 2000) |
| empyema tube | A rubber drainage tube, piercing a sheet rubber shield, passed through the chest wall in order to drain an empyema. (05 Mar 2000) |
| Toynbee's tube | A tube by which an otologist can listen to the sounds in a patient's ear during politzerization. (05 Mar 2000) |
| tracheal tube | A flexible tube inserted nasally, orally, or through a tracheotomy into the trachea to provide an airway, as in tracheal intubation. Synonym: endotracheal tube, intratracheal tube. (05 Mar 2000) |
| tracheostomy tube | A 2- to 3-inch metal or plastic tube that keeps the stoma and trachea open. Also called a trach ( trake ) tube. (12 Dec 1998) |