The Anatomy of the Zygomatic Bone Anatomy. In reptiles, amphibians, and birds, this bone is called the jugal bone or often just the jugal. The zygomatic bone also takes part in forming the floor of the orbit, as well as the temporal fossa and the infratemporal fossa. The zygomatic bones function as the origins for the masticatory muscles, especially the masseter muscles, where they help them attach inferiorly. Their frontal processes are associated with the temporalis muscle in that their fibers run parallel from them and insert onto the mandibular coronoid process. These axons have their cell … The zygomatic bone is somewhat rectangular with portions that extend out near the eye sockets and downward near... Function. PAUL C. DECHOW* AND QIAN WANG Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas ABSTRACT This issue of The Anatomical Record is the first of a two-volume set on the zygoma (also called the cheek bone, the zygomatic bone, the malar, or the jugal, the latter term … Much of the zygomatic bone protrudes away from the skull, forming the majority of the zygomatic process. Similar to the roof, it is triangular in shape. Notably, the temporal bone attaches to the joint of the jaw bone—the temporomandibular joint—and is fused with other bones of the skull, including the occipital bone on the lower rear side, the parietal bone above that, the sphenoid bone on its front side, and the zygomatic (cheek) bone. The zygomatic bones function as the origins for the masticatory muscles, especially the masseter muscles, where they help them attach inferiorly. The maxilla is also fused together with other important bones in the skull, including: the frontal bone, which makes contact with bones in the nose the zygomatic bones, or cheek bones Posteriorly, the floor is separated from … Zygomatic arch, bridge of bone extending from the temporal bone at the side of the head around to the maxilla (upper jawbone) in front and including the zygomatic (cheek) bone as a major portion. It courses inferomedially over the lateral surface of the maxilla to insert to the angle of the mouth.This attachment point is located lateral to zygomaticus minor and medial to risorius muscles. The zygomatic process of the temporal bone is a long, arched process projecting from the lower part of the squamous portion of the temporal bone.It articulates with the zygomatic bone.. Medical Definition of zygomatic bone : a bone of the side of the face below the eye that in mammals forms part of the zygomatic arch and part of the orbit and articulates with the temporal, sphenoid, and frontal bones and with the maxilla of the upper jaw — called also cheekbone, jugal, malar bone, zygoma Comments on zygomatic bone In the human skull, the zygomatic bone (cheekbone or malar bone) is a paired irregular bone which articulates with the maxilla, the temporal bone, the sphenoid bone and the frontal bone.It is situated at the upper and lateral part of the face and forms the prominence of the cheek, part of the lateral wall and floor of the orbit, and parts of the temporal fossa and the infratemporal fossa. 164). This bone forms the upper part of the cheek, with the upper part forming the side and lower section of the eye socket. The masseter muscle, important in chewing, arises from the lower edge of the arch; another major chewing muscle, the temporalis, passes through the arch. The zygomaticus major muscle originates from the lateral surface of the zygomatic bone, just anterior to the zygomaticotemporal suture and lateral to the origin of zygomaticus minor. The zygomatic arch is formed from parts of both the zygomatic bone and the temporal bone.The extension of the temporal bone is known specifically as the zygomatic process, and attaches directly … The zygomatic bone works with the masticatory muscles to control the mastication process and aesthetic function of the face. In reptiles, amphibians, and birds, this bone is called the jugal bone or often just the jugal.
The severity of the injury is directly proportional to force of the impact. Zygomatic arch, bridge of bone extending from the temporal bone at the side of the head around to the maxilla (upper jawbone) in front and including the zygomatic (cheek) bone as a major portion. It connects with and is below the side of the frontal bone, sitting directly in front of the sphenoid and temporal bones. View Show abstract In either case, the zygomatic arch functions as a structure that allows the attachment of various tissues to the skull. The zygomatic bone is small and quadrangular, and is situated at the upper and lateral part of the face: it forms the prominence of the cheek, part of the lateral wall and floor of the orbit, and parts of the temporal and infratemporal fossæ (Fig. The floor of the orbit is formed by the zygomatic bone, the orbital surface of the maxilla, and the orbital process of the palatine bone (Figure 6).It is the shortest of the orbital walls (∼40 mm). Zygomatic Arch Definition. In order for a fracture to occur in the zygomatic bone, kinetic force is required. Trabecular bone in the zygomatic region appears to be highly influenced by the local strain environment, and thus may be closely linked to orofacial function. This special issue of The Anatomical Record is the first of a two‐volume set focused on the cheekbone usually called the zygoma or zygomatic bone (plural: zygomata or zygomatic bones) in mammals, although sometimes referred to as the malar.
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