Vestibular membrane
Vestibular Membrane
The Vestibular Membrane (pronunciation: ves-ti-byu-lar mem-brane) is a significant component of the inner ear that plays a crucial role in the human auditory system.
Etymology
The term "Vestibular" is derived from the Latin word "vestibulum," which means entrance. The term "membrane" comes from the Latin "membrana," meaning a thin layer or sheet.
Definition
The Vestibular Membrane is a thin, flat layer of tissue that separates the scala vestibuli from the scala media in the cochlea of the inner ear. It is also known as Reissner's membrane, named after the German anatomist Ernst Reissner who first described it.
Function
The primary function of the Vestibular Membrane is to separate the perilymph in the scala vestibuli from the endolymph in the scala media. This separation is crucial for the proper functioning of the cochlea, particularly in the transmission of sound waves to the auditory nerve.
Related Terms
- Inner Ear: The innermost part of the ear, containing the cochlea, vestibule, and semicircular canals.
- Scala Vestibuli: The upper bony passage of the cochlea.
- Scala Media: The middle chamber of the cochlea, filled with endolymph.
- Cochlea: The spiral cavity of the inner ear containing the organ of Corti, which produces nerve impulses in response to sound vibrations.
- Perilymph: The fluid that fills the space between the bony labyrinth and the membranous labyrinth in the ear.
- Endolymph: The fluid in the membranous labyrinth of the ear.
External links
- Medical encyclopedia article on Vestibular membrane
- Wikipedia's article - Vestibular membrane
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