tegmen tympani


tegmen

 [teg´men] (L.) a covering structure or roof.tegmen tym´pani the thin layer of bone that forms the roof of the tympanic cavity, separating it from the cranial cavity.

teg·men tym·'pa·ni

[TA] the roof of the middle ear, formed by the thin 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 squamotympanic and a petrotympanic fissure. Synonym(s): roof of tympanum

teg·men tym·pa·ni

(teg'men tim'pan-ī) [TA] 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 squamotympanic and a petrotympanic fissure.