squamotympanic fissure
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Fissure — A cleft or groove. A fissure can be normal or abnormal. A fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is distinctly abnormal. It is a painful… … Medical dictionary
fissura tympanosquamosa — [TA] tympanosquamous fissure: a line seen on the posterior wall of the external acoustic meatus at the junction between the tympanic and squamous parts of the temporal bone. Called also squamotympanic fissure … Medical dictionary
tegmen — A structure that covers or roofs over a part. [L. a covering, fr. tego, to cover] t. cruris old term for tegmentum mesencephali. t. mastoideum the lamina of bone roofing over the mastoid cells. t. tympani [TA] the roof of the middle ear, formed… … Medical dictionary