Orbicularis Oculi Anatomy

Frontalis Origin, Insertion, Action

Origin:  By right and left bellies from the skin of the eyebrow, with fibers extending down to interdigitate with orbicularis oculi and procerus
Insertion:  Galea aponeurotica
Actions:  Elevates eyebrows
Innervation:  Temporal branch of the facial nerve
Blood Supply: Supraorbital branch from the ophthalmic artery

Primary Actions of the Frontalis Muscle

1. Wrinkles the skin of the forehead.
2. Elevates the eyebrows