Anatom3DDepressor anguli oris
Musculus depressor anguli oris · Stlačovač ústního koutku
Muscles
Looks like
A triangular muscle on the chin, fanning up from the lower edge of the jawbone to the corner of the mouth.
What it does
Pulls the corner of the mouth down, as in a sad or disapproving face.
Keeping it well
Powered by a low branch of the facial nerve that can be hurt in jaw or neck surgery, leaving a lopsided smile. Sudden facial droop needs urgent care.