What muscle raises and draws back the upper lip while also elevating the nostrils?

The muscle that raises and draws back the upper lip while also elevating the nostrils is the Quadratus labii superioris. This muscle plays a crucial role in facial expression by allowing for the elevation of the upper lip, which can convey emotions such as disdain or frustration. Additionally, it aids in the elevation of the nostrils, thereby contributing to facial expressions that reflect disgust or disdain.

Understanding the specific functions of facial muscles is essential in esthetics, as they impact how individuals express emotions and how these expressions can change with facial treatments or interventions. The Quadratus labii superioris, along with its role in elevating both the upper lip and nostrils, highlights the intricate connections between muscular movement and emotional expression in the face.