• The interior surface of the frontal bone contains many shallow depressions and slight ridges that follow the contours of the frontal lobe of the brain. (innerbody.com)
  • Superior to the glabella and supraorbital ridges is the squamous region, where the frontal bone is smooth and slopes posteriorly toward the partietal bones. (innerbody.com)
  • The frontalis muscle, which forms the frontal belly of the epicranius muscle, passes over the smooth squamous region of the frontal bone to attach the skin of the brow to the galea aponeurotica on top of the head. (innerbody.com)