A text-book of the diseases of the ear for students and practitioners . hes three main branches of the internal auditoryartery in the labyrinth—the arteria vestibularis anterior, the arteriavestibulo-cochlearis, and the arteria cochlece propria. According to thisauthorj the blood returns also by three main channels—through the veins ofthe internal auditory canal, through the accessory canals of the aquseductusvestibuli, and through those of the aquseductus cochlearis. 0. Eichlert states that every turn of the cochlea has a separate blood-current, which is formed by the union of two adjoining c
A text-book of the diseases of the ear for students and practitioners . hes three main branches of the internal auditoryartery in the labyrinth—the arteria vestibularis anterior, the arteriavestibulo-cochlearis, and the arteria cochlece propria. According to thisauthorj the blood returns also by three main channels—through the veins ofthe internal auditory canal, through the accessory canals of the aquseductusvestibuli, and through those of the aquseductus cochlearis. 0. Eichlert states that every turn of the cochlea has a separate blood-current, which is formed by the union of two adjoining currents—namely,that of the lamina spiralis and that of the walls of the scalae. The verytortuous artery of each turn of the cochlea lies above Rosenthals canal, anddivides into two branches : the inferior runs to the vestibular surface of thelamina spiralis, while the superior ascends to the scala vestibuli, at the upperbend of which it runs to the outer wall of the cochlear canal. Both arteriesform a capillary network from which the vein arises. This vein also. Fig. 318.—Posterior Surface of the Pyramid of the Eight TemporalBone of an Adult, with the Opened Intradural Sac of theAqjleductus Vestibuli. mi, Internal auditory canal, with the acoustic nerve ; av, Opened intradural sac ofthe aquseductus vestibuli ; si, Upper section of the sigmoid sinus ; si, Its lowersection. From a preparation in the authors collection. consists of two branches, the superior of which runs on the lower wall of thelamina spiralis, the inferior on the floor of the scala tympani. Both branchesunite into one vein in the modiolus below the canal of Rosenthal. In the left ear, which was otherwise normal, Alexander J found, in a humanfreak of united twins, the arteria stapedia arising from the internal carotid. The Veins of the Labyrinth.—The veins of the vestibule and semi-circular canals are collected by the vena aquaeductus vestibuli, which runs in aseparate bony channel and empties into the
Size: 1898px × 1317px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectear, booksubjecteardi
