Regarding organ of Corti, all are true except? – Physiology MCQ

Regarding organ of Corti, all are true except?
A. Reticular lamina is supported by rods of Corti.
B. Tectorial membrane is made of glycoprotein.
C. Hensen’s cells lie inside the outer hair cells.
D. Efferent cholinergic fibers arise from ipsilateral and contralateral superior olivary nucleus.

Correct answer : C. Hensen’s cells lie inside the outer hair cells.

Organ of Corti

• Hensen’s cells are supporting cells of organ of Corti which lie outside the outer hair cells.
• Reticular lamina is a tough membrane which is supported by rods of Corti.
• Tectorial membrane is a thin, gelatinous, elastic structure made of glycoprotein.
• Efferent cholinergic fibers arise from ipsilateral and contralateral superior olivary nucleus.

Ref: Textbook of Physiology, A K Jain, 3rd edition, Volume 2, page 1103.
Image credits: Author: Madhero88. Licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. https://en.wikipedia.org/wiki/File:Organ_of_corti.svg