Trigeminal nerve 1

Question 1

Importance of CN5?

Answer 1

Motor to the muscles of mastication (V3)

Sensory to most of the face.

Huge clinical importance, e.g. shingles, trigeminal neuralgia

Target of LA analgesia

Question 2

Where does CN5 emerge?

visual characteristics at this point?

Answer 2

• CNV emerges from the pons (part of the brainstem)
• Large sensory root and smaller motor root
• Sensory root forms the trigeminal ganglion

Question 3

Trigeminal ganglion?

Answer 3

Formed by the sensory root

Motor root joins V3 after exiting the skull

Ganglion conveys sensations of pain, temperature, touch, proprioception, and pressure from skin, muscles, TMJ, mucous membranes, and teeth

Question 4

Relevance of the artery near the CN5 ganglion

Answer 4

Clinically can cause of Trigeminal neuralgia by pression on the trigeminal ganglion - sensory region
causes sharp stabbing pain

Question 5

Ophthalmic nerve

Answer 5

Branches before exiting superior orbital fissure
General sensation to orbit, eye, nasal cavity, forehead
Completely sensory nerve