| Inner tunnel | |
|---|---|
| Limbus laminæ spiralis and membrana basilaris. ("6" is Zona arcuata.) | |
| Gray's | subject #232 1056 |
The basilar membrane stretches from the tympanic lip of the osseous spiral lamina to the basilar crest and consists of two parts, an inner and an outer. The inner is thin, and is named the inner tunnel (or zona arcuata): it supports the spiral organ of Corti.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.