Arcuate zone



arcuate zone

arcuate zone n.
The inner third of the basilar membrane of the cochlear duct, from the tympanic lip of the osseous spiral lamina to the outer pillar cell of the spiral organ . Also called zona tecta.

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  • Arcuation

    the state of being bent or curved. the use of arches in building. a system or grouping of arches. noun the use of arches or vaults in buildings an arrangement of arches arcuation ar·cu·a·tion (är’kyōō-ā’shən) n. A curvature.

  • Arcus

    a dense, horizontal, roll-shaped cloud sometimes occurring at the lower front portion of a cumulonimbus. Historical Examples The Romans originally called their triumphal arch fornix, not arcus. Rambles in Rome S. Russell Forbes A view of this is given by Donati, who calls it the arcus Domitiani. Old Rome Robert Burn In elderly persons we […]



  • Arcus cornealis

    arcus cornealis arcus cornealis arcus cor·ne·a·lis (kôr’nē-ā’lĭs) n. An opaque, grayish ring at the periphery of the cornea just within the sclerocorneal junction, common among the elderly and resulting from a deposit of fatty granules in, or hyaline degeneration of, the lamellae and cells of the cornea. Also called anterior embryotoxon, arcus adiposus, arcus juvenilis, […]

  • Arcus senilis

    the appearance of a yellowish-gray lipid ring around the margin of the cornea, occurring in aging persons. Historical Examples In elderly persons we ought always to look for the arcus senilis, which is a sign of a tendency to fatty degeneration. A System of Practical Medicine by American Authors, Vol. I Various Moreover, there is […]



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