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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.
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 supercilii
See also: muscle