Basal crest; Spiral crest
Crista basilaris; Crista spiralis
- Related terms: Basal crest
Definition
The periosteum, forming the outer wall of the ductus cochlearis, is greatly thickened and altered in character, and is called the spiral ligament. It projects inward below as a triangular prominence, the basal crest (spiral crest), which gives attachment to the outer edge of the basal lamina (basilar membrane); immediately above the crest is a concavity, the sulcus spiralis externus.
References
This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from http://www.wikipedia.org
