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Corrugator supercilii

Other Terms: Koyter's muscle, Musculus corrugator supercilii, Muscle corrugateur du sourcil

Muscle parts

None

Latin name

Musculus corrugator supercilii

Latin muscle parts

None

Group

Branchial arch muscle – second arch (Facial muscle)

Etymology

In English this muscle’s name is the muscle that wrinkles above the eyelashes. The word corrugator comes from the Latin verb corrugare, which means “to wrinkle.” This in turn arises from the Latin con meaning “with” + ruga, which means a “wrinkle or fold.” The word supercilii comes from the Latin superus meaning “over or above” and cilium, which means a hairlike structure or eyelash. This probably goes back to the Greek killo meaning a “trembling or winking,” because of the rapid movements of the eyelashes.

Origin

Medial end of the superciliary arch of the frontal bone

Insertion

Skin beneath the middle of the eyebrow

Action

Works with the orbicularis oculi muscle to pull the eyebrows towards the midline and downward. When contracted it, along with the medial aspect of the orbicularis oculi and procerus, causes the skin between the eyebrows and above the nose to be thrown into a series of transverse wrinkles.

Nerve supply

Facial nerve (Cranial nerve VII)

Blood supply

Supraorbital and supratrochlear arteries from the ophthalmic artery

Latin

Musculus corrugator supercilii

French

Muscle corrugateur du sourcil

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