What 3 bones make up the zygomatic arch?
In anatomy, the zygomatic arch, or cheek bone, is a part of the skull formed by the zygomatic process of the temporal bone (a bone extending forward from the side of the skull, over the opening of the ear) and the temporal process of the zygomatic bone (the side of the cheekbone), the two being united by an oblique …
What does the zygomatic arch include?
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. The zygomatic arch is particularly large and robust in herbivorous animals, including baboons and apes.
What area is zygomatic?
Zygomatic bone, also called cheekbone, or malar bone, diamond-shaped bone below and lateral to the orbit, or eye socket, at the widest part of the cheek. It adjoins the frontal bone at the outer edge of the orbit and the sphenoid and maxilla within the orbit.
Why does my zygomatic bone hurt?
Zygomatic arch pain is commonly reported by patients visiting the orofacial pain clinic and is majorly accepted to be caused by masseter muscle pain. But a variety of conditions may present as orofacial pain in the zygomatic arch region, including life-threatening diseases such as salivary gland tumors.
Why is it called zygomatic?
The zygomatic bone is also known as the zygomatic arch, the zygoma, the malar bone, the cheek bone and the yoke bone. The word “zygomatic” comes from the Greek “zygon” meaning a yoke or crossbar by which two draft animals such as oxen could be hitched to a plow or wagon.
What is the purpose of the zygomatic arch?
The function of the zygomatic arch is protection of the eye, origin for the masseter and part of the temporal muscles, and to provide an articulation for the mandible. The zygomatic arch is approached by an incision made along its ventral border (Fig.
What does a large zygomatic arch indicate?
The size of the zygomatic arch in relation to the rest of the skull is related to the size of the muscle that attaches to it. Therefore, a larger zygomatic arch hints that the muscle that used to attach to the skull was quite large, compared to the muscle that attached to Skull 2.
What is another name for the zygomatic bone?
Zygomatic bone: The part of the temporal bone of the skull that forms the prominence of the cheek. The zygomatic bone is also known as the zygomatic arch, the zygoma, the malar bone, the cheek bone and the yoke bone.
What is zygomatic process?
The zygomatic process is a long arched process, projecting from the lower part of the squamous part of temporal bone. The anterior end is deeply serrated and articulates with the zygomatic bone. The posterior end is connected to the squama by two roots, the anterior and posterior roots.
What happens if you break your zygomatic bone?
Patients may develop trismus (i.e. the inability to fully open the mouth) and have difficulty with chewing. There may also be bleeding through the nose, which depends on the severity of the injury. The cheekbone of these patients may be flattened due to the malar eminence being depressed.
What is an interesting fact about the zygomatic bone?
The zygomatic bone (zygoma) is an irregularly shaped bone of the skull. It is often referred to as the cheekbone, and it comprises the prominence just below the lateral side of the orbit. The zygomatic bone is nearly quadrangular in shape and it features three surfaces, five borders and two processes.
Which is the correct definition of the zygomatic arch?
Zygomatic Arch Definition. The zygomatic arch, cheek bone, or zygoma are all interchangeable terms for the structure in the skull seen indicated by the arrow in the following image. 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
Can a fracture of the zygomatic arch cause cosmetic morbidity?
Fractures of the zygomatic arch (ZA) or any of its bony articulations can cause significant functional and cosmetic morbidity. The management of the zygomatic arch and ZMC fractures should be patient-specific but range from simple observation to open reduction with internal fixation (ORIF). Anatomy
Where does the jugal point meet the zygomatic bone?
The jugal point is the anterior end of upper border of the zygomatic arch where it meets the process of the zygomatic bone. The arch is typical of Synapsida (“fused arch”), a clade of amniotes that includes mammals and their extinct relatives, such as Moschops and Dimetrodon .
Is the zygomatic bone part of the temporal bone?
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 to the similarly shaped process on the zygomatic bone.