
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
2. Elevates the eyebrows
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