corrugator muscle


cor·ru·ga·tor su·per·ci·li·i (mus·cle)

[TA] facial muscle of forehead; origin, from orbital portion of musculus orbicularis oculi and nasal prominence; insertion, skin of eyebrow; action, draws medial end of eyebrow downward and wrinkles forehead vertically, conveying facial expression of deep thought, worry, or concern; nerve supply, facial. Synonym(s): musculus corrugator supercilii [TA], Coiter muscle, corrugator muscle, wrinkler muscle of eyebrow

corrugator muscle

Facial muscle. Origin: medial part of supraorbital margin. Insertion: skin above middle of eyebrow. Nerve: facial (CN VII). Action: pulls eyebrows toward midline and downward. Synonym: Corrugator superciliiSee also: muscle