Anatomy of the Cochlea

6. Fluid found in scala media
7. On scala vestibuli, connected to stapes footplate
11. Organ responsible for transduction of auditory signals
13. Meeting point of the scala vestibuli and scala tympani at the apex of the cochlea; equalizes pressure between the 2 scalae
16. Ions high in perilymph
17. A core of temporal bone that runs up through the center of the cochlea
19. Fluid found in scala tympani and scala vestibuli
21. Found superior to the scala media
22. On lateral wall of scala media; the "battery" of the ear
24. On scala tympani, bulges out as stapes pushes in which allows for cochlear fluids to move

1. Thin projections on the cochlear hair cells that respond to fluid motion; u-pattern for inner hair cells, v-pattern for outer hair cells
2. Entirely enclosed in petrous temporal bone, makes 2 3/4 turns
3. The space within the temporal bone that encases the inner ear
4. Spiral shaped bundle inside the modiolar core
5. Fluid found in Organ of Corti - May be perilymph that has migrated through the basilar membrane
8. Ions high in endolymph
9. Divides Organ of Corti from scala media, tight covering; keeps fluids separate
10. Found inferior to the scala media
12. Membrane that sits above Organ of Corti, in contact with the tallest outer hair cell stereocilia, composed of collagen and protein
14. The inner core of the inner ear, encased in membranes
15. Also called the cochlear duct, houses the Organ of Corti
18. Connects stereocilia; plays a role in controlling the flow of ions into the hair cell
20. Membrane that separates the scala media from the scala tympani
23. Single-cell layer membrane that separates the scala media from the scala vestibuli