Facial muscles

The facial muscles enable facial expression and serve as sphincters and dilators of the orifices of the face. These muscles differ from those of other regions in the body as there is no fascia deep to the skin of the face; many of the facial muscles insert directly into the skin1.

In terms of location and function the facial muscles can be divided as follows:

Epicranial
Circumorbital and palpebral
Nasal
  • procerus
  • nasalis
  • depressor septi
Buccolabial

Elevators, retractors and evertors of the upper lip:

  • levator labii superioris alaeque nasi
  • levator labii superioris
  • zygomaticus major
  • zygomaticus minor
  • malaris
  • levator anguli oris
  • risorius

Depressors, retractors and evertors of the lower lip:

  • depressor labii inferioris
  • depressor anguli oris
  • mentalis

Compond sphincter:

  • crbicularis oris
  • incisivus superior
  • incisivus inferior

Muscle of mastication:

  • buccinator

They are innervated by the facial nerve (cranial nerve VII).

The facial muscles arise from the mesenchyme of the second branchial arch. 


Head and neck anatomy
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Article Information

rID: 49795
Section: Anatomy
Tag: refs
Synonyms or Alternate Spellings:

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