Answer
Signs and symptoms (SS) of patient with damaged right facial nerve (CN VII).
1. Drooping eyelids
Cause; dysfunction of levator palpebrae superioris
2. Drooping mouth, drooling ; difficulting retaining food in mouth
Cause: dysfunction of obicularis oris, and of buccinator muscles
3. Twisted , uneven smile: D
Cause : dysfunction of zygomaticus major, levator labii superioris, and of risorius
muscle
Work Step by Step
SS ( continued)
4. Inability to wrinkle forehead
Cause: malfunction of occipito-frontalis
5. Patient has trouble sucking liquids through drinking straws
Cause: Malfunctioning buccinator muscle
