Frontalis is a muscle located in the forehead that is primarily responsible for movement of the eyebrows and the skin of the forehead. It plays a key role in facial expressions, allowing actions such as raising the eyebrows and wrinkling the forehead. The frontalis helps convey emotions such as surprise and concern.
The name "frontalis" is derived from the Latin word "frons," meaning "forehead," referring to its location on the frontal bone of the skull.
Without the frontalis muscle, a person would have limited or no ability to lift the eyebrows, hindering non-verbal communication and altering expressions related to emotional states. Additionally, there would be difficulty in protecting the eyes from bright light or foreign particles, as raising the eyebrows helps adjust the aperture of the eyes.
