Question

In mammals, the organs of Corti is found in

• A. Scala vestibuli
• B. Scala tympani
• C. Scala media
• D. Cochlear canal

Answer 1

The correct option is C Scala media

Organ of Corti is a receptor organ of hearing and is located in the inner ear. It is considered as body's microphone. It is present on the basilar membrane which is the floor of cochlear duct. Many mechanoreceptors are present in the organ or Corti. There are many sensitive hair cells present in rows on the internal side of organ of Corti. The basal ends of hair cells are in close contact with the afferent nerve fibres. From the apical part of each hair cell, large number of processes called stereo cilia project. A thin elastic membrane is present above the row of hair cells and is called tectorial membrane. The organ of Corti is present in between Scala tympani and Scala vestibuli i.e. in Scala media.

So, the correct answer is 'Scala media'.