Vestibulocochlear nerve

Definition

The vestibulocochlear nerve, also known as cranial nerve VIII, is responsible for transmitting sound and equilibrium (balance) information from the inner ear to the brain. It has two main components: the cochlear nerve for hearing and the vestibular nerve for balance.

5 Must Know Facts For Your Next Test

1. The vestibulocochlear nerve is the eighth cranial nerve.
2. It consists of two parts: the cochlear nerve which transmits auditory information, and the vestibular nerve which transmits balance information.
3. Damage to this nerve can result in hearing loss, dizziness, or balance disorders.
4. Otic drugs may be used to treat conditions affecting the functions of this nerve such as vertigo or infections.
5. The vestibulocochlear nerve travels through the internal acoustic meatus alongside the facial nerve.

Review Questions

• What are the two main components of the vestibulocochlear nerve?
• How does damage to the vestibulocochlear nerve affect a person?
• Which cranial nerve number is assigned to the vestibulocochlear nerve?

Related terms

Cochlea:

A spiral-shaped cavity in the inner ear that plays a crucial role in hearing.

Vestibule: A central part of the bony labyrinth in the inner ear involved in balance.

Otic Drugs: Medications designed for use in treating ear conditions such as infections, pain, or vertigo.