The zygoma (also known as zygomatic bone or malar bone) is an important facial bone which forms the prominence of the cheek. “Epidemic” vs. “Pandemic” vs. “Endemic”: What Do These Terms Mean? The orbital surface forms the lateral part and some of the inferior part of the bony orbit. The zygomaticus major muscle (also major zygomatic muscle or simply zygomaticus major, latin: musculus zygomaticus major) is a paired facial muscle that extends between the zygomatic bone and the corner of the mouth.It is one of the two zygomatic muscles (major and minor) that lie next to each other in the cheek area. Each process of the zygomatic bone forms important structures of the skull. The zygomatic nerve passes through the zygomatic-orbital foramen on this surface. The zygomatic bone is occasionally referred to as the zygoma, but this term may also refer to the zygomatic arch. Dictionary.com Unabridged 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. Foramen infraorbital (maxillary bone): infraorbital nerve (V2) Foramen rotundum: V2, proximal segment. Mall describes it as being ossified from one center which appears just beneath and to the lateral side of the orbit. In some quadrumana the zygomatic bone consisted of two parts, an orbital and a malar.
A quadrilateral bone that forms the cheek prominence and articulates with the frontal, sphenoid, temporal, and maxillary bones. Near the center of this surface is the zygomaticotemporal foramen for the transmission of the zygomaticotemporal nerve. Why Do “Left” And “Right” Mean Liberal And Conservative? Managing Red Tape From The Point Of View Of A Business Founder, Knowledge Management and Organizational Learning, There Will Be Blood Movie Relations to Environmental Law and Policy, Role Race Played In America's Interaction With The World, Integrating Culture Diversity in Decision Making: Google Case Study, Interview, Primary Sources, Secondary Sources And Questionnaires, Life in the Universe Exercises and Questions, Influence of the Puritan Faith on the Development of New England, Problems and Prospects of Capital Market in Bd, La Base de datos denominada ProteC-nas MultifacC)ticas, Economic Commentary on Comcast's Prospective Acquisition of Time Werner Cable. “Affect” vs. “Effect”: Use The Correct Word Every Time. Inferior orbital fissure lies between the greater wing of sphenoid, the orbital process of the maxillary bone, and, laterally, the zygomatic bone. Published by Houghton Mifflin Company. After birth, the bone is sometimes divided by a horizontal suture into an upper larger, and a lower smaller division. 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 Advantages and Disadvantages of Natural Environment Training and Discrete Trial Teaching for Persons with Autism. In coelacanths and early tetrapods the bone is relatively large. The temporal process of the zygomatic bone forms the zygomatic arch along with the zygomatic process of the temporal bone, with a paired zygomaticotemporal foramen present on the medial deep surface of the bone. 10 Types Of Nouns Used In The English Language. 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.
The orbital surface of the maxillary process of the zygomatic bone forms a part of the infraorbital rim and a small part of the anterior part of the lateral orbital wall.[1].
The orbital process is a thick, strong plate, projecting backward and medialward from the orbital margin. In ray-finned fishes it is reduced or absent, and the entire cheek region is generally small. 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.
Is Control A Complex And Multidimensional Construct That Has Spawned A Large Body Of Research? It is roughly quadrangular in shape. Chris McCandless'a Adventure: Foolish or Heroic? 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. The bone is similarly reduced in birds. This bone is considered key in the determination of general traits of the skull, as in the case of creatures, such as dinosaurs in paleontology, whose entire skull has not been found. “Theory” vs. “Hypothesis”: What Is The Difference? Attention Deficit Hyperactivity Disorder - Essay, Unauthorized Practise By Lawyers : Clinical Paper : Professional Ethics And Professional Accounting System, President Theodore Roosevelt 's New Nationalism, Delayed Childbearing Outcomes And Prevention, Qantas Ailines And The Aviation Development Of Australia, A Media Centre Using A Raspberry Pi Device, The Report Of Clostridium Difficile Infection, The Effects Of Coal Mining On The Health Of The Body, A Critique Of Sandra Salmans ' Fighting That Old Devil Rumor, A Study On Measuring The Central Bank Independence, Horizontal And Vertical Integration For A Profitable Business Model, Evaluation Of A Good Asset Within An Organization, Declaration of Independence and the Beginning of Women's Rights Movement in America, Essay on Anatomy Case Study on the Evolution of Skin Color, Analyze the Evolution of Supply Chain Management in Apple Corporation, Relating to Characters in Sophocles' Plays, Practice Questions 2 [Chapter 9-18] Book: Epidemiology [Leon Gordis], Risks Of Holding Sovereign Currencies As Reserve Currencies.
Mall describes it as being ossified from one center which appears just beneath and to the lateral side of the orbit. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. This fissure allows the passage of branches of the V (2) as well as ophthalmic veins. Teaching of Discipleship on a Christian of Today. [6], With the exception of turtles, the jugal bone in reptiles forms a relatively narrow bar separating the orbit from the inferior temporal fenestra, of which it may also form the lower boundary. an anxiety disorder in which patients are driven to repeat the same act, such as washing their hands, over and over again, usually for many hours. What’s The Difference Between Atheism And Agnosticism? See more. The postero-superior or temporal border, curved like an italic letter f, is continuous above with the commencement of the temporal line, and below with the upper border of the zygomatic arch; the temporal fascia is attached to it. “Columbus Day” vs. “Indigenous Peoples’ Day”: What Should This Holiday Be Called?
The zygomatic bone extends backward to meet the zygomatic process of the temporal bone, forming the zygomatic … anterolateral surface is convex, pierced at its orbital border by the zygomaticofacial foramen, through which the zygomaticofacial nerve and vessels pass Reference: It is found in most reptiles, amphibians, and birds.
The zygomatic is homologous to the jugal bone of other tetrapods. The zygomatic bone articulates with the frontal bone, sphenoid bone, and paired temporal bones, and maxillary bones. "[4], For this reason some individuals undergo cheek augmentation, a form of cosmetic surgery.[5]. Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020, Collins English Dictionary - Complete & Unabridged 2012 Digital Edition Gross anatomy. The temporal surface, directed posteriorly and medially, is concave, presenting medially a rough, triangular area, for articulation with the maxilla (articular surface), and laterally a smooth, concave surface, the upper part of which forms the anterior boundary of the temporal fossa, the lower a part of the infratemporal fossa. In some quadrumana the zygomatic bone consists of two parts, an orbital and a malar. The bone is also absent in living amphibians. Here, it is a plate-like bone forming the lower margin of the orbit and much of the side of the face. The antero-inferior or maxillary border is rough, and bevelled at the expense of its inner table, to articulate with the maxilla; near the orbital margin it gives origin to the quadratus labii superioris. The lateral palpebral ligament attaches to a small protuberance called the orbital tubercle.
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