basilar membrane

[Don Sinex]

Here's a quote (perhaps with a few typing errors) from 
Peter Dallos, in the "Handbook of Physiology - The Nervous 
System III".  Sorry I don't have the complete reference.  
This qoute is from pp 613-614:

"Within the pars tecta region of the membrane (between the 
osseous spiral lamina and the foot of the outer pillar 
wall) there is a single fibrous layer between the basement 
membrane on the Organ of Corti side and a homogeneous layer 
of ground substance on the scala tympani side.  The lower 
side of the basilar membrane is covered by a layer of 
cells, the tympanic cover layer.  The more peripheral 
portion ... (pars pectinata) contains two fibrous layers 
sandwiched between the basement membrane and two 
homogeneous layers ... The strands run radially and are 
formed of fine fibrils 50 Angstrom in diameter."  In 
another article, Peter says the fibers are collagen.