Quain's elements of anatomy . Fig. 388.—Diagrammatic view of the osseous cochlea laid open, s1, modiolus or central pillar ; 2, placed on three turns of the lamina spiralis ; 3, scalatympani ; 4, scala vestibuli. Fig. 389.—View of the osseus cochlea mviuED through the middle.(from Arnold). |1, central canal of the modiolus ; 2, lamina spiralis ossea ; 3, scala tympani; 4. scalavestibuh ; 5, porous substance of the modiolus ; 6, end of the internal auditory meatus. THE MEMBRANOUS LABTEINTH. il9 cochlea viewed from the base), and ends by an arched and closed ex-tremity called the cupola, which f

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Quain's elements of anatomy . Fig. 388.—Diagrammatic view of the osseous cochlea laid open, s1, modiolus or central pillar ; 2, placed on three turns of the lamina spiralis ; 3, scalatympani ; 4, scala vestibuli. Fig. 389.—View of the osseus cochlea mviuED through the middle.(from Arnold). |1, central canal of the modiolus ; 2, lamina spiralis ossea ; 3, scala tympani; 4. scalavestibuh ; 5, porous substance of the modiolus ; 6, end of the internal auditory meatus. THE MEMBRANOUS LABTEINTH. il9 cochlea viewed from the base), and ends by an arched and closed ex-tremity called the cupola, which forms the snmmit of the cochlea. Thefirst coil, having by far the most extensive curve and being the largestportion of the tube, nearly hides the second from view ; and, bulgingsomewhat into the tympanum, forms the round elevation on the innerwall of that cavity called the promontory. The modiolus (columella cochlefe), the central pillar or axis of thecochlea, is much the thickest within the first turn of the tube, rapidly

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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy