Muscles of facial expression
From Wikipedia, the free encyclopedia
The facial muscles are a group of skeletal muscles innervated by the facial nerve that, among other things, control facial expression.
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[edit] Structure
The facial muscles are subcutaneous (just under the skin) muscles that control facial expression. They generally originate on bone, and insert on the skin of the face.
[edit] Innervation
The facial muscles are innervated by cranial nerve VII, also known as the facial nerve. In contrast, the nearby masticatory muscles are innervated by the mandibular nerve, a branch of the trigeminal nerve.
[edit] Development
The facial muscles are derived from the second branchial/pharyngeal arch.
[edit] List of muscles
The facial muscles comprise:
- Epicranius
- Procerus
- Nasalis
- Depressor septi nasi
- Orbicularis oculi
- Corrugator supercilii
- Depressor supercilii
- Auricular muscles (anterior, superior, posterior)
- Orbicularis oris
- Depressor anguli oris
- Transversus menti
- Risorius
- Zygomaticus major
- Zygomaticus minor
- Levator labii superioris
- Levator labii superioris alaeque nasi
- Depressor labii inferioris
- Levator anguli oris
- Modiolus
- Buccinator
- Mentalis
- Platysma
[edit] See also
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