| ganglion tympanicum | A small ganglion on the tympanic nerve during its passage through the petrous portion of the temporal bone. Synonym: ganglion tympanicum. (05 Mar 2000) |
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| glomus tympanicum | <radiology> Paraganglioma of middle ear, most common neoplasm of middle ear, arises from tympanic branch of glossopharyngeal nerve, arterial supply: ascending pharyngeal artery, (arises at bifurcation: do CCA injection), glomus JUGULARE is most common tumour of temporal bone (12 Dec 1998) |
| ostium tympanicum tubae auditivae | An opening in the anterior part of the tympanic cavity below the canal for the tensor tympani muscle. Synonym: ostium tympanicum tubae auditivae, tympanic opening of eustachian tube. (05 Mar 2000) |
| labium limbi tympanicum laminae spiralis | The lower, long periosteal extension of the limbus laminae spiralis osseae that rests on the basilar lamina of the spiral organ (of Corti). Synonym: labium limbi tympanicum laminae spiralis, tympanic lip of limbus of spiral lamina. Labium urethrae, one of the two lateral margins of the external urethral orifice of the female. (05 Mar 2000) |
| tegmen | Origin: L, fr. Tegere, tectum, to cover. 1. A tegument or covering. 2. <botany> The inner layer of the coating of a seed, usually thin and delicate; the endopleura. 3. <zoology> One of the elytra of an insect, especially of certain Orthoptera. 4. <zoology> Same as Tectrices. Source: Websters Dictionary (01 Mar 1998) |
| tegmen cruris | Old term for tegmentum mesencephali. (05 Mar 2000) |
| tegmen mastoideum | The lamina of bone roofing over the mastoid cells. (05 Mar 2000) |
| tegmen tympani | The roof of the middle ear, formed by the thinned anterior surface of the petrous portion of the temporal bone. Its anterior edge is inserted into the petrosquamous fissure so that it can be seen as a wedge of bone subdividing that fissure into a squamo tympanic and a petrotympanic fissure. Synonym: roof of tympanum. (05 Mar 2000) |
| tegmen ventriculi quarti | Roof of fourth ventricle, formed in its upper part by the superior medullary velum stretching between the two brachia conjunctiva (superior cerebellar peduncles), in its lower part by the inferior medullary velum composed of the choroid membrane and choroid plexus of the fourth ventricle. Synonym: roof of fourth ventricle. (05 Mar 2000) |
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