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From above comes the elevator of the angle of the mouth; from the region of the cheek-bone slant downwards the two zygomatics, which carry the angle outwards and upwards; from behind comes the buccinator, or trumpeter's muscle, which simply widens the mouth by drawing the corners straight outward; from below, the depressor of the angle; not to add a seventh, sometimes well marked, the "laughing muscle" of Santorini.
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