A text-book of the diseases of the ear for students and practitioners . ory canal, this smallcanal joins a blind sac in the dura mater about 15 mm. long and 9 ; the latter running towards the sigmoid sinus (Fig. 318), is lined witha layer of epithelium, and communicates with the lymphatic spaces ofthe labyrinth (Zuckerkandl). According to Riidinger, lateral canals branchoff from the intradural sac of the aqueduct, which he thinks serve as drainage-tubes for the perilymph to the subdural lymph-spaces. The aquseductuscochleae, about 10 mm. long, arises from a free opening in the scala tym
A text-book of the diseases of the ear for students and practitioners . ory canal, this smallcanal joins a blind sac in the dura mater about 15 mm. long and 9 ; the latter running towards the sigmoid sinus (Fig. 318), is lined witha layer of epithelium, and communicates with the lymphatic spaces ofthe labyrinth (Zuckerkandl). According to Riidinger, lateral canals branchoff from the intradural sac of the aqueduct, which he thinks serve as drainage-tubes for the perilymph to the subdural lymph-spaces. The aquseductuscochleae, about 10 mm. long, arises from a free opening in the scala tympaniin the neighbourhood of the round window, and ends in a funnel-shapedenlargement at the inferior surface of the petrous portion of the temporalbone, in the region of its posterior edge. It acts as the immediate means ofcommunication between the arachnoid space and the perilymphatic fluidof the labyrinth. Weber-Liel, Schwalbe, and others, have shown experi-mentally that a coloured fluid injected into the subarachnoid space penetratesinto the cochlea and
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectear, booksubjecteardi
