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Corrugator supercilii

The corrugator supercilii (also corrugator supercilii muscle, latin: musculus corrugator supercilii) is a small, narrow facial muscle located at the medial end of the eyebrow. It lies between the frontalis and orbicularis oculi muscles.

Origin

The corrugator supercilii originates from the medial part of the superciliary arch.

Insertion

The corrugator supercilii penetrates the frontalis and orbicularis oculi muscles and inserts into the skin over the middle of the eyebrow.

Action

Upon contraction the corrugator supercilii pulls the skin of the eyebrow downward and medially and produces vertical wrinkles of the forehead.

Innervation

The corrugator supercilii muscle is innervated by the temporal branch of facial nerve (CN VII).

Blood supply

The corrugator supercilii receives blood supply mainly from branches of the superficial temporal and ophthalmic arteries.