Scala tympani
Sensory (eye & ear)OrgansHeadLeft and right
View left in 3D View right in 3D
- What it is
- The lower perilymph-filled channel of the cochlea, running from the apex (helicotrema) back to the round window, beneath the basilar membrane.
- Function
- Returns the pressure wave to the round window; the pressure difference across the basilar membrane between the two scalae makes it vibrate.
- Size
- Follows all 2.5 turns; widest (about 1 mm) at the base.
- Clinical note
- The preferred channel for inserting a cochlear-implant electrode, entered through the round window.