The mentalis muscle is actually a paired muscle mass Found within the decreased conclude on the chin, which acts as the primary muscle mass with the reduce lip. This muscle mass originates… They change after you achieve or get rid of excess weight. They modify in response to birth control https://grok.com/share/c2hhcmQtMw%3D%3D_5ad6450c-533d-442c-a09c-9f7bce1babfb