[TA] facial muscle of anterior cheek extending to upper lip; origin, zygomatic bone posterior to zygomaticomaxillary suture; insertion, orbicularis oris of upper lip; action, draws upper lip upward and outward; nerve supply, facial. SYN: musculus zygomaticus minor [TA], caput zygomaticum quadrati labii superioris, lesser zygomatic muscle.
