Given below is a diagrammatic cross section of a single loop of human cochlea :

Which one of the following options correctly represents the names of three different parts?

Options

A. D: Sensory hair cells, A: Endolymph, B: Tectorial membrane
B. A: Perilymph, B: Tectorial membrane, C: Endolymph
C. B: Tectorial membrane, C: Perilymph, D: Secretory cells
D. C: Endolymph, D: Sensory hair cells, A : Serum

Answer

B

Explanation

A – Perilymph – Scala vestibule is filled with fluid called perilymph.
B – Tectorial membrane – Scala media consist of sensory supporting hair cells embedded in a membrane called tectorial membrane.
C – Endolymph – Scala media is filled with fluid called endolymph.