mentalis (muscle)

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men·ta·lis (mus·cle)

facial muscle of chin; origin, incisor fossa of mandible; insertion, skin of chin; action, raises and wrinkles skin of chin, thus elevating the lower lip; nerve supply, facial.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
This jaw vibrato technique is different than rolling the bottom lip up or crunching up the chin muscle and is done without relaxing the bottom lip or chin.
Scientists in the 1960s found that recording electrical activity in the brain, chin muscle activity, and movement of the eye muscles provided enough information to describe the basic pattern of sleep and defined specific stages of sleep.