Corrugator supercilii is one of the muscles of the forehead. It is small and
pyramidal in shape.
It originates from the medial superciliary arch. Its fibres pass superolaterally
between the palpebral and orbital parts of orbicularis oculi.. It inserts into
the skin of the medial forehead up to the mid-portion of the eyebrow.
Its blood supply is from the ophthalmic artery.
It acts to:
- depress the eyebrows
- move the eyebrows medially
- wrinkle the medial forehead
It is innervated by the temporal branch of the facial nerve (VII).
Corrugator supercilii is one of the muscles targeted for the prevention of
frown lines in the upper third of the face during botulinum toxin treatment.