Acoustic nerve
Acoustic Nerve
The Acoustic Nerve (pronounced: a·cou·stic nerve | \ ə-ˈkü-stik ˈnərv \), also known as the Vestibulocochlear Nerve or Cranial Nerve VIII, is one of the twelve Cranial Nerves that are part of the peripheral nervous system. It is responsible for transmitting sound and equilibrium (balance) information from the inner ear to the brain.
Etymology
The term "Acoustic" is derived from the Greek word "akoustikos", which means "of or for hearing". The term "Nerve" comes from the Latin word "nervus", meaning "sinew, tendon, nerve".
Function
The Acoustic Nerve is divided into two parts: the Cochlear Nerve and the Vestibular Nerve. The Cochlear Nerve carries auditory sensory information from the cochlea of the inner ear, while the Vestibular Nerve carries balance sensory information from the vestibule and semicircular canals of the inner ear.
Related Terms
- Cochlea: The spiral-shaped part of the inner ear that is responsible for converting sound vibrations into nerve impulses.
- Vestibule (ear): The central part of the bony labyrinth in the inner ear, responsible for equilibrium.
- Semicircular Canals: Three fluid-filled bony channels in the inner ear, responsible for sensing rotational movements for the purpose of maintaining balance.
See Also
External links
- Medical encyclopedia article on Acoustic nerve
- Wikipedia's article - Acoustic nerve
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