"origin: medial end of the supraorbital margins"
"insertion: deep to the skin above the middle of the supraorbital margins 1"
"innervation: facial nerve (VII)"
"action: frowning, furrowing the forehead, drawing eyebrows inferomedially"
Expected headings
"Action"
"combines its actions with orbicularis oculi muscle to pull the eyebrows medially and downwards in bright environments to shield the eyes (e.g. in sunlight)"