tegmen

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 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. SYN: roof of tympanum.
- t. ventriculi quarti [TA] roof of fourth ventricle, formed in its upper part by the superior medullary velum stretching between the two brachia conjunctiva (superior cerebellar peduncles) and in its lower part by the inferior medullary velum composed of the choroid membrane and choroid plexus of the fourth ventricle. SYN: roof of fourth ventricle [TA].

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teg·men 'teg-mən n, pl teg·mi·na -mə-nə an anatomical layer or cover specif TEGMEN TYMPANI

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n. (pl. tegmina)
a structure that covers an organ or part of an organ. For example the tegmen tympani is the bony roof of the middle ear.

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teg·men (tegґmən) pl. tegґmina [L. “cover”] 1. a covering structure or roof.

Medical dictionary. 2011.

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  • Tegmen — Teg men, n.; pl. {Tegmina}. [L., fr. tegere, tectum, to cover.] 1. A tegument or covering. [1913 Webster] 2. (Bot.) The inner layer of the coating of a seed, usually thin and delicate; the endopleura. [1913 Webster] 3. (Zo[ o]l.) One of the… …   The Collaborative International Dictionary of English

  • Tegmen — (lat), 1) die äußere, meist aus zwei Spelzen bestehende Hülle eines vollständigen Ährchens; 2) so v.w. Stipula; 3) (Anat.), so v.w. Corium …   Pierer's Universal-Lexikon

  • tegmen — [teg′mən] n. pl. tegmina [teg′mi nə] [L < tegere, to cover: see THATCH] 1. a covering; integument 2. Bot. the inner coat of a seed 3. Zool. a) a beetle elytron b) a hardened fore …   English World dictionary

  • tegmen — noun (plural tegmina) Etymology: New Latin tegmin , tegmen, from Latin, covering, from tegere to cover more at thatch Date: 1807 a superficial layer or covering usually of a plant or animal part …   New Collegiate Dictionary

  • Tegmen — A tegmen (pl. tegmina ) designates the modified leathery front wing on an insect. They are not used for flying. Orders that have tegmina are the Dermaptera (earwigs), Orthoptera (grasshoppers, crickets), Mantodea (praying mantis) and Blattodea… …   Wikipedia

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