Procerus
Head & Face
Creates the horizontal wrinkle over the bridge of the nose — the 'bunny scrunch' or nose-wrinkling expression.
Function
Depresses medial eyebrow and wrinkles bridge of nose
Origin
Nasal bone and upper lateral nasal cartilage
Insertion
Skin of lower forehead between eyebrows
Innervation
Temporal/buccal branches of facial nerve (CN VII)