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Motor Innervation of the Face
motor innervation of the face
7
Anatomy
Graduate
07/26/2011

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Cards

Term
  • The ____ nerve (___) innervates the muscles of facial expression.
  • The _____ nerve (CN ___ - _____ portion ____) innervates the muscles of mastication.
Definition
  • The Facial nerve (CN VII) innervates the muscles of facial expression.
  • The Trigeminal nerve (CN V - mandibular portion V3) innervates the muscles of mastication.
Term
Facial Nerve (CN 7) emerges from the skull through the _____ and enters the _____. Gives rise to 5 terminal branches: _____, _____, _____, _____, and _____
Definition
  • emerges from skull thru the stylomastoid foramen
  • enters the parotid gland
  • gives rise to five terminal branches:
    • temporal
    • zygomatic
    • buccal
    • mandibular
    • cervical
Term

Sensory innervation of the face is primarily thru the three branches of the _____.

Definition

Sensory innervation of the face is primarily thru the three branches of the Trigeminal Nerve.

Term
3 branches of the trigeminal nerve:
Definition

ophthalmic n.

maxillary n.

mandibular n.

Term

 

  • Ophthalmic Nerve
    • superior division; smallest of three branches
      • _____ n.:
        • supraorbital
        • supratrochlear
      • _____
      • _____
    • enters the orbit thru the _____
    • supplies the skin of the _____, _____, and _____

 

Definition

 

  • Ophthalmic n.
    • superior division; smallest of three branches
      • frontal n.:
        • supraorbital
        • supratrochlear
      • nasociliary
      • lacrimal
    • enters the orbit thru the superior orbital fissure
    • supplies the skin of the forehead, upper eyelid, and nose

 

Term
  • Maxillary nerve:
    • intermediate division
      • _____ br.
      • _____ br.
      • _____ br.
    • supplies skin over _____, _____, _____ _____, _____
Definition

 

  • Maxillary nerve:
    • intermediate division
      • infraorbital br.
      • zygomaticofacial br.
      • zygomaticotemporal br.
    • supplies skin over lateral nose, upper lip, lower eyelid, zygomatic bone, temporal region

 

Term
  • Mandibular nerve: only division that has motor and sensory
    • _____ division
    • also supplies motor fibers to the _____
    • sensory supply to _____, _____, _____, _____
Definition

 

  • Mandibular nerve: only division that has motor and sensory
    • inferior division
    • also supplies motor fibers to the muscles of mastication
    • sensory supply to skin of chin, lower lip, cheek, temporal area

 

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