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6 Cards in this Set

  • Front
  • Back

CN VII




- Name


- Type


- Origin

- Facial




- Mixed




- Originates: Pons

CN VII




-Motor Innervation

- muscles of facial expression


- platysma (pout)




- stylohyoid (elevate hyoid / tongue)


- post belly of digastric (e hyoid elevation)




- stapedius (stabalizes stapes)




- submandibular & sublingual glands

CN VII




- Sensory Innervation

Taste


- Ant 2/3 of tongue


- Floor of mouth


- Soft/Hard Palate




Touch


- external ear


- auditory meatus

CN VII




- Functions

- Movements of facial expression




- Hyolaryngeal elevation




- Saliva/tear production




- Taste ant. 2/3 of tongue

CN VII




- Damage

- Motor


~ lower face droop


~ smooth forehead


~ ability to


-wrinkle forehead


-close eyes tightly


-spread lips (smile)


-keep lips compressed against resistance


- Sensory


~ loss of taste (ant 2/3)

CN VII




- Damage (UMN vs LMN)

- Unilateral


~ UMN = Contralateral lower face weakness


~ LMN = Ipsilateral facial weakness




-Bilateral


~ UMN = spastic paralysis (bilateral)


~ LMN = flaccid paralysis (bilateral)