Definition

1. Noun:
   • Seventh cranial nerve: The "facial nerve" is the seventh of twelve paired cranial nerves. It emerges from the brainstem and controls the muscles of facial expression.
   • Motor and sensory nerve: It primarily carries motor fibers to stimulate the muscles used for smiling, frowning, and other expressions. It also carries sensory fibers for taste from the front two-thirds of the tongue and provides parasympathetic innervation to glands.

Usage Examples

• Noun:
  • Bell's palsy is a condition that causes temporary paralysis or weakness of the muscles on one side of the face due to inflammation of the facial nerve.
  • The surgeon carefully avoided the facial nerve during the procedure to prevent loss of muscle function.
  • Damage to the facial nerve can result in an inability to close the eyelid on the affected side.

Advanced Usage

• Clinical context: The term is frequently used in medical diagnoses, surgical reports, and anatomical descriptions.
  • The patient's symptoms were localized to the distribution of the facial nerve.
• "Facial nerve palsy/paralysis": A common clinical term for the loss of facial nerve function.
  • The cause of the acute facial nerve paralysis was unknown.

Variants and Related Words

• Cranial nerve VII: A direct synonym and alternate anatomical name.
• Nervus facialis: The Latin term used in formal anatomical nomenclature.
• Facial canal: The bony canal in the skull through which part of the facial nerve travels.

Synonyms

• Seventh cranial nerve: The numerical designation.
• Nervus facialis: The Latin synonym.

Related Phrases

• Facial nerve injury: Specific damage to this nerve.
• Facial nerve decompression: A surgical procedure to relieve pressure on the nerve.
• Facial nerve monitoring: The use of technology during surgery to preserve nerve function.

Related Terms (Contextual)

• Bell's palsy: The most common disorder affecting the facial nerve.
• Cranial nerves: The broader category of twelve nerves to which the facial nerve belongs.
• Facial muscles: The effector organs controlled by this nerve's motor fibers.

Noun

1. cranial nerve that supplies facial muscles