Corrugator supercilii muscle

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Corrugator supercilii muscle
Gray379corrugator.png
Left orbicularis oculi muscle (notice the corrugator muscle at the top)
Corrugator supercilii.png
Corrugator supercilii
Details
Latin Musculus corrugator supercilii
Superciliary arches
Forehead skin, near eyebrow
Ophthalmic artery
Facial nerve
Actions Wrinkles forehead
Identifiers
Gray's p.381
Dorlands
/Elsevier
m_22/12548671
TA A04.1.03.018
FMA FMA:46794
Anatomical terms of muscle

The corrugator supercilii is a small, narrow, pyramidal muscle close to the eye. It is located at the medial end of the eyebrow, beneath the frontalis and just above orbicularis oculi muscle.

It arises from the medial end of the superciliary arch; and its fibers pass upward and laterally, between the palpebral and orbital portions of the orbicularis oculi muscle, and are inserted into the deep surface of the skin, above the middle of the orbital arch.

Action[edit]

The corrugator draws the eyebrow downward and medially, producing the vertical wrinkles of the forehead. It is the "frowning" muscle, and may be regarded as the principal muscle in the expression of suffering. It also contracts to prevent high sun glare, pulling the eyebrows toward the bridge of the nose, making a roof over the area above the middle corner of the eye and typical forehead furrows.[1]

The muscle is sometimes surgically severed or paralysed with botulinum toxin as a preventive treatment for some types of migraine or for aesthetic reasons.

Additional images[edit]

References[edit]

  1. ^ "eye, human."Encyclopædia Britannica from Encyclopædia Britannica 2006 Ultimate Reference Suite DVD 2009

This article incorporates text from a public domain edition of Gray's Anatomy.

External links[edit]