Definition

1. Noun:
   • The main sensory nerve of the face and motor nerve for the muscles of mastication: The trigeminal nerve is the fifth cranial nerve (CN V). It is primarily responsible for transmitting sensations from the face to the brain and for enabling the motor functions involved in chewing.

Usage Examples

• Noun:
  • The patient experienced severe pain along the distribution of the trigeminal nerve.
  • A common disorder affecting this nerve is trigeminal neuralgia.
  • The surgeon carefully avoided the trigeminal nerve during the procedure.

Advanced Usage

• "Trigeminal neuralgia": A chronic pain condition affecting the trigeminal nerve, characterized by sudden, severe facial pain.

  • Medication is often the first line of treatment for trigeminal neuralgia.

• "Trigeminal ganglion": A cluster of nerve cell bodies associated with the trigeminal nerve, located near the temple.

  • The trigeminal ganglion is a key structure for sensory input from the face.

Variants and Related Words

• Trigeminal (adj): Pertaining to the trigeminal nerve.

  • The trigeminal pathway is complex.

• Cranial nerve (n): Any of the twelve pairs of nerves that emerge directly from the brain. The trigeminal nerve is the fifth cranial nerve.

  • The olfactory nerve is the first cranial nerve.

Synonyms

• Fifth cranial nerve: The anatomical designation for the trigeminal nerve.
• CN V: The abbreviated medical term for the trigeminal nerve.

Related Phrases

• Ophthalmic division (V1): The first branch of the trigeminal nerve, responsible for sensation in the upper face, including the forehead and eyes.

  • The ophthalmic division carries sensory information from the cornea.

• Maxillary division (V2): The second branch of the trigeminal nerve, responsible for sensation in the mid-face, including the cheek and upper jaw.

  • The maxillary division innervates the upper teeth.

• Mandibular division (V3): The third branch of the trigeminal nerve. It carries sensation from the lower face and jaw and provides motor function to the muscles of mastication.

  • The mandibular division controls the muscles used for chewing.

Noun

1. the main sensory nerve of the face and motor nerve for the muscles of mastication