The corrugator supercilii produces the characteristic vertical glabellar lines between the eyebrows during frowning or concentration. It inserts directly into skin, making it the prototypical facial expression muscle.
An expanded entry for Corrugator Supercilii.
| Origin | Medial supraorbital ridge, deep surface of the frontal bone |
|---|---|
| Insertion | Skin of the medial eyebrow, dermis |
| Nerve Supply | Facial nerve, temporal branch (VII) |
| Blood Supply | Supratrochlear artery |
| Actions |
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|---|
It draws the eyebrows down and toward the midline, producing vertical frown lines and shielding the eyes from glare.
Corrugator is the primary target for glabellar botulinum injection, the first FDA-approved cosmetic botulinum use. Overtreatment causes medial brow ptosis. The supratrochlear nerve runs deep to corrugator and is the target for migraine nerve block. Corrugator transection is performed in endoscopic brow lift for permanent glabellar line reduction.
Produces vertical furrows between the eyebrows during squinting or frowning, the glabellar lines.
Targeted corrugator supercilii botulinum injection for glabellar frown lines, the most widely performed cosmetic neurotoxin treatment globally.
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