Orbital process of palatine bone
Bone: Orbital process of palatine bone Left palatine bone. Nasal aspect. Enlarged. Left palatine bone. Posterior aspect. Enlarged. Latin processus orbitalis Gray's subject #41 168
The orbital process of the palatine bone is placed on a higher level than the sphenoidal, and is directed upward and lateralward from the front of the vertical part, to which it is connected by a constricted neck. It presents five surfaces, which enclose an air cell. Of these surfaces, three are articular and two non-articular.
The articular surfaces are:
- the anterior or maxillary, directed forward, lateralward, and downward, of an oblong form, and rough for articulation with the maxilla
- the posterior or sphenoidal, directed backward, upward, and medialward; it presents the opening of the air cell, which usually communicates with the sphenoidal sinus; the margins of the opening are serrated for articulation with the sphenoidal concha
- the medial or ethmoidal, directed forward, articulates with the labyrinth of the ethmoid.
In some cases the air cell opens on this surface of the bone and then communicates with the posterior ethmoidal cells. More rarely it opens on both surfaces, and then communicates with the posterior ethmoidal cells and the sphenoidal sinus.
The non-articular surfaces are:
- the superior or orbital, directed upward and lateralward; it is triangular in shape, and forms the back part of the floor of the orbit; and
- the lateral, of an oblong form, directed toward the pterygopalatine fossa; it is separated from the orbital surface by a rounded border, which enters into the formation of the inferior orbital fissure.
Bones of head and neck: the facial skeleton of the skull (TA A02.1.08–15, GA 2.156–177) MaxillaSurfacesProcessesOther Zygomatic PalatineFossaePlatesProcessesOrbital · Sphenoidal Mandible Minor/
Wikimedia Foundation. 2010.
Look at other dictionaries:
Sphenoidal process of palatine bone — Infobox Bone Name = Sphenoidal process of palatine bone Latin = processus sphenoidalis GraySubject = 41 GrayPage = 169 Caption = Left palatine bone. Nasal aspect. Enlarged. Caption2 = Left palatine bone. Posterior aspect. Enlarged. System =… … Wikipedia
Orbital lamina of ethmoid bone — Ethmoid bone from the right side. (Lamina papyracea visible at center left.) … Wikipedia
Palatine bone — Bone: Palatine bone Permanent teeth of upper dental arch, seen from below. (Horizontal part of palatine bone visible at bottom.) … Wikipedia
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 … Wikipedia
orbital process — n a process of the palatine bone that forms part of the floor of the orbit … Medical dictionary
orbital process — noun : a process of the palatine bone that forms part of the floor of the orbit … Useful english dictionary
Perpendicular plate of palatine bone — Infobox Bone Name = Perpendicular plate of palatine bone Latin = lamina perpendicularis ossis palatini, pars perpendicularis GraySubject = 41 GrayPage = 168 Caption = Left palatine bone. Nasal aspect. Enlarged. (Vertical plate labeled at center… … 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
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
Bone — This article is about the skeletal organ. For other uses, see Bone (disambiguation) and Bones (disambiguation). For the tissue, see Osseous tissue. Drawing of a human femur Bones are rigid organs that constitute part of the endoskeleton of… … Wikipedia