Question

Helicotrema lies at

• A. End of cochlea
• B. Middle of cochlea
• C. Throughout cochlea
• D. Near oval window

Answer 1

The correct option is A End of cochlea

Helicoterma is a part of cochlea which separates scala vestibuli and scala tympani. It is present at the apex of cochlea i.e. end of cochlea. The scala vestibuli and scala tympani communicate through helicotrema as the perilymph (fluid filled in scala vestibuli and scala tympani) of these canals is interconnected. The hair cells present near to helicotrema are very sensitive to sounds of low frequency.

So, the correct answer is 'End of cochlea'.