"origin: in front of the zygomaticotemporal suture of the zygomatic bone"
"insertion: modiolus at the angle of the mouth where it blends with the fibres of levator anguli oris, orbicularis oris and more deeply placed muscular bands"
Expected headings
"Action"
"draws the labial commissure (angle of the mouth) backward, upwards and laterally (e.g. when laughing and smiling) 2"