Full Frontal Belly of Epicranius Muscle (Frontalis Muscle) Description
[Continued from above] . . . muscle is wider than the occipitalis and its fibers are lighter in color and longer. There are no bony attachments. The medial fibers are connected with those of the Procerus; the corrugator and the orbicularis oculi mix with its immediate fibers. Its lateral fibers also mix with the latter muscle over the zygomatic process of the frontal bone.
At these attachments, the fibers move up and join the galea aponeurotica beneath the coronal suture. The medial margins of the frontales move together for a while above the root of the nose; however, between the occipitales there is a significant, though changing interval taken up by the galea aponeurotica.