Membranes
What is the membrane that separates the scala vestibuli from the scala media?
Reissner's Membrane
What fluid is found in both the scala vestibuli and the scala tympani?
About how long is the bony labyrinth that makes up the cochlea?
35mm
What is the name for a singular nerve cell.
Neuron
How many stereocilia are on one inner hair cell?
40
What membrane makes up the superior surface of the organ of Corti?
Reticular Lamina
What fluid is found in the scala media?
Endolymph
How many turns are there in the spiral of the cochlea?
2.75
What is the name of the collection of nerve fibers that run through the modiolus?
Spiral Ganglion
How many stereocilia are on one outer hair cell?
150
What membrane is inferior to the organ of Corti?
Basilar Membrane
What fluid is found in the organ of Corti? What is this fluid similar to?
Cortilymph is found in the organ of Corti and is similar to perilymph.
What is the name of the bony core of the cochlea?
Modiolus
Of which cranial nerve is the auditory nerve a part of?
CN VIII the vestibulocochlear nerve.
What is the name of the structures that connect the stereocilia of the outer hair cells?
tip links or cross links
Is the basilar membrane wider at the base or the apex of the cochlea?
It is 3x wider at the apex!
Perilymph
Spiral Lamina
Is it easier to depolarize a neuron right after it has been depolarized or after a resting periord.
It is easier to depolarize a neuron after a period of rest.
The tallest stereocilia of the outer hair cells are embedded in which membrane?
What membrane is considered the "battery" of the ear?
Stria Vascularis
Which of the fluids of the inner ear is high in potassium and similar in composition to saliva?
Endolymph
What is the name of the holes in the spiral lamina that allow nerve fibers to pass through?
Habenula Perforata
In the auditory nerve tonotopic organization is preserved. Where do we find the neurons carrying high frequency information?
These neurons are located near the outside of the auditory nerve bundle.
Stereocilia of the outer hair cells are different lengths along the cochlea. Are the longest at the base or apex?
Apex