ANATOMY

Detailed explanation-1: -The mentalis muscle is a paired central muscle of the lower lip, situated at the tip of the chin. It originates from the mentum of the mandible, and inserts into the soft tissue of the chin. It is sometimes referred to as the “pouting muscle” due to it raising the lower lip and causing chin wrinkles.

Detailed explanation-2: -The mentalis muscle is involved in expressing doubt and contempt, as it elevates, everts and protrudes the lower lip, and wrinkles the skin of the chin.

Detailed explanation-3: -The mentalis muscle originates at the level of the lower anterior mandibular incisors and travels inferiorly to insert into the skin of the chin. The mentalis is a paired muscle that elevates and protrudes the central portion of the lower lip.

Detailed explanation-4: -The mentalis muscle (MT) is the only elevator of the lower lip and the chin, and it provides the major vertical support for the lower lip.

Detailed explanation-5: -The mentalis muscle is a paired muscle located at the lower end of the chin, which acts as the primary muscle of the lower lip.