Scala media is filled with endolymph.
Column-I
Column-II
(a)
Macula
(i)
Filled with endolymph
(b)
Organ of Corti
(ii)
Attached to the tympanic membrane
(c)
Malleus
(iii)
Saccule and Utricle
(d)
Scala media
(iv)
Contain hair cells that act as auditory receptors