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Tutorial 60 - The Frown Muscle
🕑 Added 2016-03-01 10:39:09 +0000 UTC The frown is caused by this muscle, the depressor anguli oris. It pulls on the corner of the mouth, where many of the mouth muscles converge, and draws the corner of the mouth down towards the chin. The effect is one of the skin folding and bunching in the area.
