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Corrugator supercilii muscle

from Latin: corrugare - wrinkle; cilium - eyelash, eyelid
German: Musculus corrugator supercilii

1 Definition

The corrugator supercilii muscle is a small, pyramid-shaped muscle in the region of the palpebral fissure. It counts among the mimic muscles.

2 Devolution

The corrugator supercilii muscle has its origin at the superciliary arch of the frontal bone. Its fibers pass below the occipitofrontalis muscle, and partly below the orbicularis oculi muscle diagonally into cranial and lateral direction. There, they insert into the skin of the lateral eyebrow.

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3 Innervation

The corruugator supercilii muscle is innervated by the temporal branches of the VIIth cranial nerve (facial nerve).

4 Function

The corrugator supercilii muscle draws the eyebrow into medial and downward direction. The muscle has grown together with the corium, which causes the skin to follow the muscle movements. Therefore, it generates vertical wrinkles on the forehead, the so-called anger wrinkle (glabellar frown line). The corrugator supercilii muscle contributes to giving the face a "suffering" character.

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