Corrugator supercilii muscle
Anatomical right orbicularis oculi muscle (notice the corrugator muscle at the top)
Corrugator supercilii
Details
OriginSupraorbital ridge ( Superciliary arches )
InsertionForehead skin, near eyebrow
ArteryOphthalmic artery
NerveFacial nerve
ActionsWrinkles forehead
Identifiers
LatinMusculus corrugator supercilii
TA98A04.1.03.018
TA22071
FMA46794
Anatomical terms of muscle

The corrugator supercilii muscle is a small,[1] narrow, pyramidal muscle[1] of the face. It arises from the medial end of the superciliary arch; it inserts into the deep surface of the skin of the eyebrow.

It draws the eyebrow downward and medially, producing the vertical "frowning" wrinkles of the forehead. It may be thought as the principal muscle in the facial expression of suffering. It also shields the eyes from strong sunlight.

Structure

The corrugator supercilii muscle is located at the medial end of the eyebrow. Its fibers pass laterally and somewhat superiorly from its origin to its insertion.[1]

Origin

It arises from bone at the medial extremity of the superciliary arch.[1]

Insertion

It inserts between the palpebral and orbital portions of the orbicularis oculi muscle. It inserts into the deep surface of the skin of the eyebrow, above the middle of the orbital arch.

Innervation

Motor innervation is provided by the temporal branches of facial nerve (CN VII).[1]

Vasculature

The muscle receives arterial supply from adjacent arteries - mostly from the superficial temporal artery, and the ophthalmic artery.[1]

Relations

It is situated deep to the frontalis muscle (of the occipitofrontalis muscle) and orbicularis oculi muscle, with which it partially blends.[1] Its fibres are situated between the palpebral and orbital portions of the orbicularis oculi muscle.

The supratrochlear nerve passes between this muscle and the frontalis muscle.[2]

Function

The muscle acts in tandem with the orbicularis oculi muscle. The corrugator supercilii muscle acts upon the skin of the forehead superior to the middle of the supraorbital margin,[1] drawing the eyebrow inferomedially to produce vertical wrinkles of the forehead[3] just superior to the nose.[1] It is the "frowning" muscle, and may be regarded as the principal muscle in the expression of suffering.[4] It also contracts to prevent high sun glare,[4] 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[4] to shield the eye from excessively bright sunlight.[1]

Clinical significance

The muscle is sometimes surgically severed or paralysed with botulinum toxin as a preventive treatment for some types of migraine or for aesthetic reasons.[5]

Etymology

The name corrugator supercilii comes from Latin, and means wrinkler of the eyebrows.

Additional images

References

Public domain This article incorporates text in the public domain from page 907 of the 20th edition of Gray's Anatomy (1918)

  1. 1 2 3 4 5 6 7 8 9 10 Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 624. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  2. ↑ Lasaosa, S. Santos; Pérez, M. L. Cuadrado; Peral, A. L. Guerrero; Villanueva, M. Huerta; Porta-Etessam, J.; Pozo-Rosich, P.; Pareja, J. A. (2017-06-01). "Consensus recommendations for anaesthetic peripheral nerve block". Neurología (English Edition). 32 (5): 316–330. doi:10.1016/j.nrleng.2016.04.002. ISSN 2173-5808.
  3. ↑ Cattaneo, Luigi; Pavesi, Giovanni (2014-01-01). "The facial motor system". Neuroscience & Biobehavioral Reviews. 38: 135–159. doi:10.1016/j.neubiorev.2013.11.002. ISSN 0149-7634. PMID 24239732. S2CID 207090623 – via ScienceDirect.
  4. 1 2 3 "eye, human."Encyclopædia Britannica from Encyclopædia Britannica 2006 Ultimate Reference Suite DVD 2009
  5. ↑ de Ru JA, Schellekens PP, Lohuis PJ (2011). "Corrugator supercilii transection for headache emanating from the frontal region: a clinical evaluation of ten patients". J Neural Transm (Vienna). 118 (11): 1571–4. doi:10.1007/s00702-011-0654-1. PMID 21597942. S2CID 23829349.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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