zygomaticus major muscle

(redirected from Zygomaticus muscle)

zy·go·mat·i·cus ma·jor mus·cle

(zī'gō-mat'i-kŭs mā'jŏr mŭs'ĕl)
Facial muscle of anterior cheek extending to upper lip; origin, zygomatic bone anterior to temporozygomatic suture; insertion, muscles at angle of mouth; action, draws upper lip upward and laterally; nerve supply, facial.
Synonym(s): musculus zygomaticus major [TA] , greater zygomatic muscle, musculus zygomaticus.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
In this sense, the smile assessed as attractive surrounds the contraction of the major zygomaticus muscle in combination with the orbicularis oculi (Lin et al., 2013), which may explain the significant increase in interalar distance of this area during the muscle action.
Injecting BoNT too far above the lateral margin of orbit can cause superior eyelid ptosis, while injection too far below can result in zygomaticus muscle paralysis and lip asymmetry (lip ptosis).
[15] have stated that it encloses the zygomaticus muscles. In the specimens examined in this study, we have observed that the anlage of the SMAS is on the same plane and discontinuously reaches the zygomaticus major muscle.