zygomaticus minor

zygomaticus minor

one of the 12 muscles of the mouth. Arising from the malar surface of the zygomatic bone and inserting into the upper lip, it acts to deepen the nasolabial furrow in a sad facial expression. Formerly called quadratus labii superioris. Also called zygomatic head. Compare zygomaticus major.
References in periodicals archive ?
Between 27 and 45 mm, the frontalis and zygomaticus minor appear.
Nasolabial folds are created by the zygomaticus minor, levator labii superioris, orbicularis oris, and levator labii superioris alaeque nasi.