Scala tympani is connected to scala vestibuli by means of
A
Stapes
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B
Helicotrema
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C
Basilar membrane
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D
Tectorial membrane
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Solution
The correct option is A Helicotrema
Helicotrema is a part of cochlear duct that connects scala tympani to scala vestibuli. The hairs present near the helicotrema can detect low frequency sounds. Scala tympani and scala vestibuli are filled with perilymph. They communicate by means of helicotrema. It is a part of apex of cochlea.