Through which narrow canal does the scala tubula communicate with the scala tympani?
Ductus endolymphaticus
Helicotrema
Ductus utriculi
Sacculo utricular canal
The scala tubula communicates with the scala tympani through the helicotrema. The helicotrema is a narrow canal located at the apex of the cochlea in the inner ear. It serves as the connection point between the scala tubula and the scala tympani. Sound vibrations entering the cochlea travel through the scala vestibuli, pass through the scala tubula, and reach the scala tympani via the helicotrema. In this way, the helicotrema Hence, the correct answer is option 2.