Definition

1. Noun:
   • A composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochlea: The "eighth cranial nerve" is one of the twelve cranial nerves. It is a sensory nerve responsible for transmitting sound and balance information from the inner ear to the brain.

Usage

• The term "eighth cranial nerve" is used in medical, anatomical, and biological contexts to refer specifically to this nerve bundle. It is a precise anatomical term.

Examples

• Noun:
  • Damage to the eighth cranial nerve can result in hearing loss and vertigo.
  • The surgeon carefully avoided the eighth cranial nerve during the procedure.
  • The audiologist explained how the eighth cranial nerve carries signals from the cochlea.

Advanced Usage

• "Vestibulocochlear nerve": This is the more formal and technically precise synonym for the eighth cranial nerve.
  • The vestibulocochlear nerve, or eighth cranial nerve, has two distinct components: the cochlear nerve and the vestibular nerve.

Variants and Related Words

• Vestibulocochlear nerve (n): The anatomical name for the eighth cranial nerve.
• Acoustic nerve (n): An older, less precise term sometimes used synonymously with the eighth cranial nerve, though it technically refers only to the cochlear portion.
• Cranial nerve VIII (n): A numerical designation for the same nerve.

Synonyms

• Vestibulocochlear nerve: The primary synonym.
• Acoustic nerve: A common, though sometimes imprecise, synonym.
• Auditory nerve: Often used interchangeably, though it may refer specifically to the cochlear part.

Related Phrases

• Eighth nerve: A common abbreviated form used in medical shorthand.
  • The patient was diagnosed with an eighth nerve disorder.

Noun

1. a composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochlea