| labyrinthine apoplexy | A clinical syndrome manifested as a single, abrupt attack of severe vertigo, nausea, and vomiting, with permanent loss of labyrinthine function on one side, but without associated hearing loss or tinnitus. Attributed to occlusion of the labyrinthine branch of the internal auditory artery. (05 Mar 2000) |
|---|---|
| labyrinthine artery | <anatomy, artery> Internal acoustic meatal branch. A branch of the basilar artery that enters the labyrinth through the internal acoustic meatus. Synonym: arteria labyrinthi, ramus meatus acustici interni, arteria auditiva interna, artery of labyrinth, internal auditory artery. (05 Mar 2000) |
| labyrinthine fluids | Fluids found within the osseous labyrinth (perilymph) and the membranous labyrinth (endolymph) of the inner ear. (12 Dec 1998) |
| labyrinthine nystagmus | Nystagmus resulting from physiological stimuli to the labyrinth that may be rotatory, caloric, compressive, or galvanic, or due to labyrinthal lesions. See: Barany's sign. Synonym: labyrinthine nystagmus. (05 Mar 2000) |
| labyrinthine placenta | A placenta in which maternal blood circulates through channels within the foetal syncytiotrophoblast. (05 Mar 2000) |
| labyrinthine reflexes | Reflex's initiated through stimulation of receptors in the utricle or saemicircular canals. See: statotonic reflexes, statokinetic reflex, righting reflexes. (05 Mar 2000) |
| labyrinthine righting reflexes | Stimulation of the proprioceptors of the labyrinth causes changes in tone of the neck muscles which bring the head into its natural position in space. (05 Mar 2000) |
| labyrinthine torticollis | Torticollis due to vestibular disorder. (05 Mar 2000) |
| labyrinthine veins | One or more veins accompanying the labyrinthine artery; they drain the internal ear, pass out through the internal acoustic meatus, and empty into the transverse sinus or the inferior petrosal sinus. Synonym: venae labyrinthi, internal auditory veins. (05 Mar 2000) |
| labyrinthine vertigo | <neurology> A name applied to recurrent vertigo accompanied by ringing in the ears (tinnitus) and deafness. A dysfunction of the semi-circular canals (endolymphatic sac) in the inner ear. Symptoms include dizziness, hearing loss (one-sided), vertigo, nausea, vomiting and abnormal eye movements. Treatment includes anticholinergics, antihistamines and other medications which relieve vertigo. Diuretic medications have been used to lower pressure in the endolymphatic sac. (27 Sep 1997) |
| labyrinthine wall of middle ear | A bony layer separating the middle from the internal ear or labyrinth; it contains the fenestra vestibuli and the fenestra cochleae. Synonym: paries labyrinthicus cavi tympani, labyrinthine wall of middle ear, medial wall of middle ear. (05 Mar 2000) |
| labyrinthitis | <pathology> Inflammation of the inner ear and semicircular canals. These structures are normally responsible for the maintenance balance and the perception of body position. Inflammation of these structures can result in nausea, vomiting and vertigo made worse by movement. (27 Sep 1997) |
| labyrinthodon | <paleontology> A genus of very large fossil amphibians, of the Triassic period, having bony plates on the under side of the body. It is the type of the order Labyrinthodonta. Synonym: Mastodonsaurus. Origin: Gr. Labyrinth +, tooth. Source: Websters Dictionary (01 Mar 1998) |
| labyrinthodont | <paleontology> Of or pertaining to the Labyrinthodonta. One of the Labyrinthodonta. Source: Websters Dictionary (01 Mar 1998) |
| labyrinthodonta | <paleontology> An extinct order of Amphibia, including the typical genus Labyrinthodon, and many other allied forms, from the Carboniferous, Permian, and Triassic formations. By recent writers they are divided into two or more orders. See Stegocephala. Origin: NL. See Labyrinthodon. Source: Websters Dictionary (01 Mar 1998) |