What is the Viiith nerve?

What is the Viiith nerve?

Abstract. The vestibulocochlear nerve (8th cranial nerve) is a sensory nerve. It is made up of two nerves, the cochlear, which transmits sound and the vestibular which controls balance.

Where is the vestibulocochlear nerve located?

internal auditory meatus
The vestibulocochlear nerve is located in the internal auditory meatus (internal auditory canal). The nerve is responsible for equilibrium and hearing. Conditions of the vestibulocochlear nerve include vestibular neuritis, labyrinthitis, and acoustic neuroma.

Which cranial nerve is concerned with the maintenance of balance?

vestibular nerve
The vestibular nerve is primarily responsible for maintaining body balance and eye movements, while the cochlear nerve is responsible for hearing.

Where is the 7th and 8th cranial nerve located?

It consists of three parts: the outer ear, the middle ear, and the inner ear. The middle and inner ear are located deep in the temporal bone of the skull. The vestibulocochlear nerve (eighth cranial nerve) is responsible for relaying hearing and balance signals from the inner ear to the brain.

What are the signs of the cochlear nerve lesion?

Symptoms

• Hearing loss, usually gradually worsening over months to years — although in rare cases sudden — and occurring on only one side or more severe on one side.
• Ringing (tinnitus) in the affected ear.
• Unsteadiness or loss of balance.
• Dizziness (vertigo)
• Facial numbness and weakness or loss of muscle movement.

How is the abducens nerve cranial nerve VI classified?

Cranial nerve III, IV, and VI (oculomotor, trochlear, and abducens nerves, respectively) are general somatic efferent (GSE) nerves responsible for innervating the extraocular muscles within the orbit.

What nerve causes vertigo?

The vestibulocochlear nerve sends balance and head position information from the inner ear (see left box) to the brain. When the nerve becomes swollen (right box), the brain can’t interpret the information correctly. This results in a person experiencing such symptoms as dizziness and vertigo.

What nerve controls sense of smell?

The olfactory nerve is the first cranial nerve (CN I). It is a sensory nerve that functions for the sense of smell. Olfaction is phylogenetically referred to as the oldest of the senses. It is carried out through special visceral afferent nerve.

Which cranial nerve causes vertigo?

The eighth cranial nerve (vestibulocochlear nerve) may also be inflamed. The inflammation of these causes a feeling of spinning (vertigo), hearing loss, and other symptoms. In most people, these symptoms go away over time.

What is the largest cranial nerve?

vagus nerve
The vagus nerve (cranial nerve [CN] X) is the longest cranial nerve in the body, containing both motor and sensory functions in both the afferent and efferent regards.