Facial muscles
Updates to Article Attributes
Body
was changed:
The facial muscles (also known as the muscles of facial expression or mimetic 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 skin 1.
Gross anatomy
In terms of location and function the facial muscles can be subdivided as follows:
Epicranial
- epicranius
- occipitofrontalis
- temporoparietalis
Circumorbital and palpebral
Nasal
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
Compound sphincter:
- orbicularis oris
- incisivus superior
- incisivus inferior
- buccinator
Innervation
They are innervated by branches of the facial nerve (VII).
Development
The facial muscles arise from the mesenchyme of the second branchial arch.
-<li><a href="/articles/nasalis">nasalis</a></li>- +<li>
- +<a href="/articles/nasalis">nasalis</a><ul>
- +<li><a title="Compressor naris" href="/articles/compressor-naris">compressor naris</a></li>
- +<li><a title="Dilator naris" href="/articles/dilator-naris-1">dilator naris</a></li>
- +</ul>
- +</li>
-<li><a title="Zygomaticus major" href="/articles/zygomaticus-major">zygomaticus major</a></li>-<li><a title="Zygomaticus minor" href="/articles/zygomaticus-minor">zygomaticus minor</a></li>- +<li><a href="/articles/zygomaticus-major">zygomaticus major</a></li>
- +<li><a href="/articles/zygomaticus-minor">zygomaticus minor</a></li>
-</ul><p><a href="/articles/muscles-of-mastication">Muscle of mastication</a>:</p><ul><li>buccinator</li></ul><h4>Innervation</h4><p>They are innervated by the <a href="/articles/facial-nerve">facial nerve (VII)</a>.</p><h4>Development</h4><p>The facial muscles arise from the <a title="Mesenchyme" href="/articles/mesenchyme">mesenchyme</a> of the second branchial arch. </p>- +</ul><p><a href="/articles/muscles-of-mastication">Muscle of mastication</a>:</p><ul><li>buccinator</li></ul><h4>Innervation</h4><p>They are innervated by branches of the <a href="/articles/facial-nerve">facial nerve (VII)</a>.</p><h4>Development</h4><p>The facial muscles arise from the <a href="/articles/mesenchyme">mesenchyme</a> of the second branchial arch. </p>
Unable to process the form. Check for errors and try again.