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蜗小管沟通鼓阶的外淋巴间隙与蛛网下腔,其功能尚未完全明瞭,它在电镜下的结构,几乎无人报导。作者们用60个正常豚鼠,其中20个观察了外口和内口,另外40个用断裂备制法(fracture preparation)观察了它的管腔。在扫描电镜下放大30～10000倍进行观察。结果:(1)在外口处,硬脑膜和蛛网膜室分层状进入蜗小管,当它进入管腔时,硬脑膜变薄,以致不能与骨膜和蛛网膜区分开。(2)管腔由内耳周导管组织(periotic duct tissue)所形成的错综复杂的网状结构所充满,此网分布的特点,有的部位致密,有的部位疏松,但不完全封闭管腔,故外淋巴液和脑脊液之间可以互相流通。(3)内耳周导管
The function of the snail canal communicating with the outer lymph space and the subarachnoid space of the scala tympani has not yet been fully understood. Its structure under electron microscopy is almost unmanned. The authors used 60 normal guinea pigs, of which 20 observed the external and internal ports and the other 40 observed its lumen with a fracture preparation. Scanning electron microscope magnification of 30 to 10,000 times for observation. Results: (1) Outside the mouth, the dura mater and arachnoid compartment layered into the cochlear tubules, and when it entered the lumen, the dura mater thinned so as not to be distinguishable from the periosteum and the arachnoid. (2) The lumen is filled by the intricate network structure formed by the perior duct tissue of the inner ear. The characteristics of the network are that some sites are dense and some are loose but not completely closed, therefore Perilymph and cerebrospinal fluid can flow between each other. (3) Inner ear catheter