Internal Ear is the essential part of the organ of hearing and receives peripheral ramifications of the auditory nerve. It is also called as labyrinth due to its complexity of its shape.
- It consists of two parts,
- a complex membranous sac containing neuroepithelium filled with a fluid endolymph, the membranous labyrinth
- a series of cavities in the petrous temporal bone encloses membranous part, the osseous labyrinth.
The two parts being separated by peri-lymphatic space containing a fluid the perilymph.
- Internal Ear consist these headings-