| 释义 |
scala Anat.|ˈskeɪlə|
[L., = ‘ladder’.]
Each of two passages (the scala tympani below and the scala vestibuli above) into which the spiral tube of the cochlea is divided by a bony spiral lamina and which communicate at the apex of the spiral; also, the scala media or central duct of the cochlea, situated between these two passages and shut off from them by two membranes.
1712Bibliotheca Anat., Med., Chir. II. 214/2 We have discover'd two Channels into which the Cochlea is divided by the Septum, called Scalæ, or Ladders; one of which..is called the Scala Tympani: But the other..is called the Scala Vestibuli. 1803C. Bell Anat. Human Body III. 430 Or it [sc. the vibrating motion] must pass from the scala vestibuli into the scala tympani. 1872Gray's Anat. (ed. 6) 596 The space between the membrane of Reissner and membrana basilaris is generally described as the Scala media, Canalis membranacea, or Canalis cochleæ, and this is the nomenclature which will be used here. 1902D. J. Cunningham Text-bk. Anat. 717 The two scalæ communicate with each other through the opening of the helicotrema at the apex of the cochlea. 1945[see Reissner]. 1974Encycl. Brit. Macropædia V. 1123/2 The interior of the cochlea is divided longitudinally into three spiral ramps or scalae: the scala vestibuli,..the scala tympani,..and the scala media. |