Question

Which is not part of cochlear duct?

• A. Reissner's membrane
• B. Scala media
• C. Macula of utricle
• D. Tectorial membrane

Answer 1

Answer: (C)

Macula of utricle

Cochlear duct or scala media is a small canal in cochlea that separates scala vestibuli and scala tympani. The floor of cochlear duct is called basilar membrane which bears organ of Corti. Internal side of organ of Corti has rows of hair cells above which a thin and elastic membrane called tectorial membrane is present.

Macula is the projecting ridge of saccule and utricle which are otolith organs present in inner ear.

So, the correct answer is 'Macula of utricle'.