What facial muscle is involved surrounded by pulling the corners of the mouth inward, as though to whistle?
I put this within medicine because i figure that's were the anatomy populace would be lurking.
Answers: Decussating into the Orbicularis oris are fibers from several other facial muscles, including the Buccinator, the Levator anguli oris, the Depressor anguli oris, the Depressor (Quadratus) labii inferioris and perhaps a few others.
It's a bit complex. The depressor anguli oris depresses the angle of the mouth, being the antagonist of the Levator anguli oris and the Zygomaticus main; acting with the Levator it draws the angle of the mouth medialward. I contemplate this is your answer.
Is the word pronounced em bou sure, or Ahm bou sure?
Lurk, lurk...its the orbicularis oris
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