Cortis organ: sensor of sound vibration On the lower wall of the scala media Tectorialmembrane(盖膜) Inner (close to spiral lamina)and outer (farther from the spiral amina) hair cells(毛细胞) Supporting cells: r inner and outer phalangeal cells(指细胞) pillar cells(柱细胞) atonal membrane emal sara tunnel af cochlear oudt eptheiai cet Ining basilar neres to spra forooolapenDus nerre gangbenCorti’s organ：sensor of sound vibration On the lower wall of the scala media Tectorial membrane （盖膜） Inner (close to spiral lamina)and outer (farther from the spiral lamina) hair cells （毛细胞） Supporting cells: inner and outer phalangeal cells（指细胞） pillar cells（柱细胞）