Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
The frontalis is a muscle located in the forehead, part of the occipitofrontalis muscle group, responsible for movements such as raising the eyebrows and wrinkling the forehead. It plays a key role in facial expressions.
AP course connection
Topic 11.3: 11.3 Axial Muscles of the Head, Neck, and Back
Occipitofrontalis: A muscle consisting of two parts, the frontalis and occipitalis, connected by a cranial aponeurosis, involved in moving the scalp and eyebrows.
Orbicularis oculi: A circular muscle around the eye socket that enables blinking and squinting.
Galea aponeurotica: A tough layer of dense fibrous tissue that connects the frontalis and occipitalis muscles across the top of the skull