Umbo of tympanic membrane
- Umbo of tympanic membrane
:"Umbo is also a term for a shield boss and for the swollen (oldest) part of a bivalve (clam, mussel, etc) shell near the ligament that holds together the two shell valves."Infobox Anatomy
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Latin = umbo membranae tympanicae
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Caption = The tympanic membrane viewed from within. The Umbo is located near the center, denoted as 2.
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The umbo is the most depressed part of the tympanic membrane.
Depression
The manubrium of the malleus is firmly attached to the medial surface of the membrane as far as its center, which it draws toward the tympanic cavity; the lateral surface of the membrane is thus concave, and the most depressed part of this concavity is named the umbo.
External links
* [http://webmedia.unmc.edu/intmed/general/eye&ear/introtm.htm Diagram] at unmc.edu
* [http://www.aap.org/otitismedia/www/vc/ear/rvw/rvw2.cfm Diagram] at aap.org
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Look at other dictionaries:
tympanic membrane — noun the membrane in the ear that vibrates to sound • Syn: ↑eardrum, ↑tympanum, ↑myringa • Hypernyms: ↑membrane, ↑tissue layer • Hyponyms: ↑perforated eardrum … Useful english dictionary
umbo membranae tympanicae — umbo of tympanic membrane: the slight projection at the center of the outer surface of the tympanic membrane, corresponding to the point of attachment of the tip of the manubrium of the malleus. Called also spatula mallei … Medical dictionary
Umbo — may refer to: *A shield boss *The Umbo of tympanic membrane a part of the human body *Umbo is the (often somewhat protruding) part of a Bivalve shell which was formed when the animal was a juvenile *Umbo was the name used by the German… … Wikipedia
Umbo — Um bo, n.; pl. L. {Umbones}, E. {Umbos}. [L.] 1. The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike. [1913 Webster] 2. A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or … The Collaborative International Dictionary of English
umbo — 1. [NA] A projecting point of a surface. 2. SYN: u. of tympanic membrane. [L. boss of a shield, a knob] u. membranae tympani [TA] SYN: u. of tympanic membrane. u. of … Medical dictionary
umbo — noun a) A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane; as, the umbo in the integument of the larvæ of echinoderms or in the … Wiktionary
umbo — /um boh/, n., pl. umbones /um boh neez/, umbos. 1. a boss on a shield, as one at the center of a circular shield. 2. any similar boss or protuberance. 3. Zool. the beak of a bivalve shell; the protuberance of each valve above the hinge. 4. Anat.… … Universalium
umbo — um•bo [[t]ˈʌm boʊ[/t]] n. pl. um•bo•nes [[t]ʌmˈboʊ niz[/t]] um•bos 1) her a boss on a shield 2) any similar boss or protuberance 3) zool. the beak of a bivalve shell; the protuberance of each valve above the hinge 4) anat. the raised area on the… … From formal English to slang
umbo — noun (plural umbones or umbos) Etymology: Latin; akin to Latin umbilicus more at navel Date: 1721 1. the boss of a shield 2. a rounded elevation: as a. an inward projection of the tympanic membrane of the ear b. one of the lateral prominences… … New Collegiate Dictionary
Membranous wall of tympanic cavity — Coronal section of right temporal bone. The m … Wikipedia
