The facial nerve supplies motor branches to the muscles of facial expression.
This nerve is therefore tested by asking the patient to crease up their forehead (raise their eyebrows), close their eyes and keep them closed against resistance, puff out their cheeks and reveal their teeth.
CLINICAL EXAMINATION OF THE CNS: VII CRANIAL NERVE
The Facial Nerve
- Ask the patient to puff out his/her cheeks against resistance.
- This nerve is tested by asking to show his/her teeth.
- Tongue Deviation, forehead wrinkles, whistle, smile etc..
Sensory
Test for Sensory anterior 2/3 of tongue - taste,