Depressor anguli oris muscle

Changed by Daniel J Bell, 22 Sep 2021

Updates to Article Attributes

Body was changed:

The depressor anguli oris muscle (also known as the triangularis muscle) is one of the muscles of facial expressionmuscles.

Summary

  • origin: oblique line of the mandible
  • insertion: 
    • angle of the mouth
    • superficial fibres from both sides merge to form the transversus menti
  • innervation: facial nerve
  • action: 
    • depresses the angle of the mouth, e.g. frowning
  • -<p>The <strong>depressor anguli oris muscle</strong> (also known as the <strong>triangularis muscle</strong>) is one of the <a href="/articles/facial-muscles">muscles of facial expression</a>.</p><h4>Summary</h4><ul>
  • +<p>The <strong>depressor anguli oris muscle</strong> (also known as the <strong>triangularis muscle</strong>) is one of the <a href="/articles/facial-muscles">facial muscles</a>.</p><h4>Summary</h4><ul>
  • -<strong>origin</strong>: oblique line of the mandible</li>
  • +<strong>origin</strong>: oblique line of the <a title="Mandible" href="/articles/mandible">mandible</a>
  • +</li>

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