Blank Diagram Of The Cochlea. A core component of the cochlea is the organ of corti the sensory organ of hearing which is distributed along the partition separating the fluid chambers in the coiled tapered tube of the cochlea. The eustachian tube runs from the middle ear to the area in back of the nose.
The eustachian tube runs from the middle ear to the area in back of the nose. Diagram of the main parts of the peripheral hearing system. The hearing part of the inner ear is rolled up into a spiral called the cochlea as it looks like a snail shell cochlea is the greek word for snail.
When the stapes moves in and out of the oval window of the cochlea it creates a fluid motion hydrodynamic energy.
The bony cochlea is so called because it is shaped like a snail shell it has two and a half turns and houses the organ of hearing known as the membranous labyrinth surrounded by fluid called the perilymph. It resides on the basilar membrane a stiff membrane separating the scala tympani and scala media figure 1a. Over the cochlea we can see the vestibule which is the second sensory organ of the inner ear. The central hearing system consists of the auditory nerve and an incredibly complex pathway through the brain stem and onward to the auditory cortex of the brain.