The Zygomatic major is a muscle of the human body. A top-down view of skeletal muscle Muscle is a contractile form of tissue. ... Human anatomy or anthropotomy is a special field within anatomy. ...
The Zygomaticus (Zygomaticusmajor) arises from the zygomatic bone, in front of the zygomaticotemporal suture, and descending obliquely with a medial inclination, is inserted into the angle of the mouth, where it blends with the fibers of the Caninus, Orbicularis oris, and Triangularis.
380) is a thin quadrilateral muscle, occupying the interval between the maxilla and the mandible at the side of the face.
The Zygomaticus and Risorius may be doubled or the latter greatly enlarged or blended with the Platysma.
Chewing food is a complex motor function, muscles need to be powerful enough to break tough portions of food, yet have enough dexterity to not injure the tongue, and to clear the mouth completely.
The primary muscles of mastication, each of which is paired, are the temporalis, masseter, medial pterygoid and lateral pterygoid.
It is thought that feedback from proprioceptive nerves in teeth and the temporomandibular joints govern the creation of neural pathways, which in turn determine duration and force of individual muscle activation (and in some cases muscle fibre groups as in the masseter and temporalis).
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