Corrugator supercilii muscle
- Corrugator supercilii muscle
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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.
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. 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.
Additional images
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Frontal bone. Outer surface.
References
- ^ "eye, human."Encyclopædia Britannica from Encyclopædia Britannica 2006 Ultimate Reference Suite DVD 2009
External links
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 As such, some of the information contained within it may be outdated.
| v · d · eList of muscles of head and neck: the head (TA A04.1, GA 4.378) |
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| Extraocular (CN III, IV, VI) |
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| Mastication (CN V3) |
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| Facial (CN VII) |
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Palate/fauces (CN IX, X, XI)
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| Tongue (CN XII) |
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anat (h/n, u, t/d, a/p, l)/phys/devp/hist
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noco(m, s, c)/cong(d)/tumr, sysi/epon, injr
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Categories:
- Muscles of the head and neck
- Muscle stubs
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Look at other dictionaries:
corrugator supercilii — noun A small muscle at the medial end of the eyebrow. Syn: corrugator supercilii muscle … Wiktionary
Corrugator supercilii — Muscle corrugateur du sourcil Muscle corrugateur du sourcil (en rouge); la partie supéro interne du muscle orbiculaire de l oeil a été dégagée pour faire apparaitre le muscle. Le muscle corrugateur du sourcil (Musculus corrugator supercilii en… … Wikipédia en Français
Depressor supercilii muscle — Depressor supercilii Latin musculus depressor supercilii Origin Medial orbital rim … Wikipedia
corrugator muscle superciliary — corrugator supercilii muscle musculus corrugator supercilii … Medical dictionary
Corrugator — may refer to: Corrugator supercilii muscle Corrugator cutis ani muscle Machinery used to manufacture corrugated fiberboard used in boxes A Corrugator is also a machine which is used to produce corrugated plastic pipe. This disambiguation page… … Wikipedia
Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… … Medical dictionary
Muscle sourcilier — Muscle corrugateur du sourcil Muscle corrugateur du sourcil (en rouge); la partie supéro interne du muscle orbiculaire de l oeil a été dégagée pour faire apparaitre le muscle. Le muscle corrugateur du sourcil (Musculus corrugator supercilii en… … Wikipédia en Français
musculus corrugator supercilii — [TA] superciliary corrugator muscle: origin, medial end of superciliary arch; insertion, skin of eyebrow; innervation, facial; action, draws eyebrow downward and medially. Called also Koyter muscle … Medical dictionary
Muscle corrugateur du sourcil — (en rouge); la partie supéro interne du muscle orbiculaire de l œil a été dégagée pour faire apparaitre le muscle. Le muscle corrugateur du sourcil (Musculus corrugator supercilii en latin) ou muscle sourcilier est un petit muscle pair, charnu… … Wikipédia en Français
Muscle — For other uses of Muscle , see Muscle (disambiguation). A top down view of skeletal muscle Muscle (from Latin … Wikipedia
