Orbital process of the zygomatic bone
Bone: Orbital process of the zygomatic bone Left zygomatic bone. Malar surface. (Orbital proc. visible at upper left.) Latin facies orbitalis ossis zygomatici Gray's subject #40 165
The orbital process of the zygomatic bone is a thick, strong plate, projecting backward and medialward from the orbital margin.
On it are seen the orifices of two canals, the zygomatico-orbital foramina; one of these canals opens into the temporal fossa, the other on the malar surface of the bone; the former transmits the zygomaticotemporal, the latter the zygomaticofacial nerve.
- Its postero-lateral surface, smooth and convex, forms parts of the temporal and infratemporal fossae.
- Its anterior margin, smooth and rounded, is part of the circumference of the orbit.
- Its superior margin, rough, and directed horizontally, articulates with the frontal bone behind the zygomatic process.
- Its posterior margin is serrated for articulation, with the great wing of the sphenoid and the orbital surface of the maxilla.
At the angle of junction of the sphenoidal and maxillary portions, a short, concave, non-articular part is generally seen; this forms the anterior boundary of the inferior orbital fissure: occasionally, this non-articular part is absent, the fissure then being completed by the junction of the maxilla and sphenoid, or by the interposition of a small sutural bone in the angular interval between them.
Bones of head and neck: the facial skeleton of the skull (TA A02.1.08–15, GA 2.156–177) MaxillaSurfacesProcessesOther Zygomatic PalatineFossaePlatesProcesses Mandible Minor/
Wikimedia Foundation. 2010.
Look at other dictionaries:
Lateral process of the zygomatic bone — Left zygomatic bone. Malar surface. Left zygomatic bone in s … Wikipedia
Orbital process of palatine bone — Bone: Orbital process of palatine bone Left palatine bone. Nasal aspect. Enlarged … Wikipedia
Zygomatic bone — Bone: Zygomatic bone Left zygomatic bone in situ … Wikipedia
Orbital surface of the body of the maxilla — Bone: Orbital surface of the body of the maxilla Left maxilla. Outer surface. Latin facies orbitalis corporis maxillae Gray s … Wikipedia
Mastoid part of the temporal bone — Bone: Mastoid portion of the temporal bone Side view of head, showing surface relations of bones … Wikipedia
Coronoid process of the mandible — Bone: Coronoid process of the mandible Mandible. Outer surface. Side view. (Coronoid process labeled at top center.) Latin processus coronoideus mand … Wikipedia
Zygomatic process — is a protrusion from the rest of the skull, like the bumper of a car. Most of it belongs to the zygomatic bone, and could therefore be called the zygomatic process of the zygomatic bone. However, there are other bones contributing to it too,… … Wikipedia
Zygomatic process of maxilla — Bone: Zygomatic process of maxilla Articulation of nasal and lacrimal bones with maxilla. (Zygomatic process visible at center right.) … Wikipedia
Orbital lamina of ethmoid bone — Ethmoid bone from the right side. (Lamina papyracea visible at center left.) … Wikipedia
Process — In anatomy, a process is a projection from a structure. The process of the mandible is the part of the lower jaw that projects forward. In a more general sense, a process is a series of actions or events that are part of a system or of a… … Medical dictionary