Corrugator supercilii muscle

Corrugator supercilii muscle
File:Musculuscorrugatorsupercilii.png
Left obicularis oculi; notice the corrugator muscle at the top
Latin	musculus corrugator supercilii.
Gray's	subject #106 381
Origin	superciliary arches
Insertion	forehead skin, near eyebrow
Artery:
Nerve:	facial nerve
Action:	wrinkles forehead
Dorlands /Elsevier	m_22/12548671

The Corrugator supercilii is a small, narrow, pyramidal muscle, placed at the medial end of the eyebrow, beneath the Frontalis and Orbicularis oculi.

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

Action

The Corrugator draws the eyebrow downward and medialward, 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.

Additional images

• 

  Frontal bone. Outer surface.

External links

• LUC crr
• -751501235 at GPnotebook
• Corrugator+supercilii+muscle at eMedicine Dictionary

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

it:muscolo corrugatore del sopracciglio