| Corrugator supercilii muscle | |
|---|---|
| Left obicularis oculi; notice the corrugator muscle at the top | |
| Corrugator supercilii | |
| Latin | musculus corrugator supercilii. |
| Gray's | subject #106 381 |
| Origin | superciliary arches |
| Insertion | forehead skin, near eyebrow |
| Artery | ophthalmic artery |
| Nerve | facial nerve |
| Actions | wrinkles forehead |
The Corrugator supercilii is a small, narrow, pyramidal muscle, placed at the medial end of the eyebrow, beneath the Frontalis and just above 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.
Contents |
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. It also contracts in order 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.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.