The zygomatic bone functions as a structure which joins the bones of the face while protecting the arteries, nerves, veins, and organs which lie below the surface. The arches of the zygomatic bone provide a person’s cheeks with the structure to fill out the face.
What is the purpose of the zygomatic process of the temporal bone?
The zygomatic process is a place for muscle attachment, mainly muscles involved in chewing. In addition, this process of the temporal bone helps strengthen the entire cheekbone area.
Why is it called zygomatic bone?
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's the purpose of cheekbones?
There are many muscles in the cheek region. The masseter muscle is the largest in the cheek region. The masseter contributes to the lateral fullness of the cheek, but its primary function is mastication. The lower part of the orbicularis oculi muscle contributes to the superior part of the cheek.What are characteristics of 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.
What is a zygomatic process?
Medical Definition of zygomatic process : any of several bony processes that articulate with the zygomatic bone: as. a : a long slender process of the temporal bone helping to form the zygomatic arch. b : a narrow process of the frontal bone articulating with the zygomatic bone.
What are the process of the zygomatic bone?
Processes of the zygomatic bone The zygomatic bone itself has four processes, namely the frontosphenoidal, orbital, maxillary and temporal processes. The frontosphenoidal process is thick and serrated.
What happens if the zygomatic bone is damaged?
Fractures of the ZMC or zygomatic arch can often lead to unsightly malar depression, which should be corrected to restore a normal facial contour. ZMC fractures can also cause significant functional issues, including trismus, enophthalmos and/or diplopia, and paresthesias of the infraorbital nerve.What is the position of the zygomatic bone?
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.
Is the zygomatic bone part of the temporal bone?The temporal bone consists of four parts— the squamous, mastoid, petrous and tympanic parts. … The zygomatic process is a long, arched process projecting from the lower region of the squamous part and it articulates with the zygomatic bone. Posteroinferior to the squamous is the mastoid part.
Article first time published onWhat type of bone is the zygomatic?
Anatomical terms of 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.
What is the palatine bone?
The Adult Palatine. The palatine bones contribute to the posterior part of the roof of the mouth and floor and lateral walls of the nose, the medial wall of the maxillary sinuses and the orbital floors. Each bone (Fig. 5-66) consists of horizontal and perpendicular plates (laminae) set at right angles to each other.
Is the zygomatic bone a flat bone?
The spine is the place in the human body where the most irregular bones can be found. … The irregular bones are: the vertebrae, sacrum, coccyx, temporal, sphenoid, ethmoid, zygomatic, maxilla, mandible, palatine, inferior nasal concha, and hyoid.
Which bones form the cheek?
The zygomatic bone forms the bony prominence of the cheek. It also forms the lower lateral part of the orbital margin, and this part of the lateral orbital wall. The zygomatic bone extends backward to meet the zygomatic process of the temporal bone, forming the zygomatic arch.
What muscles originate from the zygomatic bone?
Origin(Posterior part of) Lateral aspect of zygomatic boneFunctionElevates and everts angle of mouth
What is the function of the Cribriform plate?
function in sinus system This bone, the cribriform plate, transmits the olfactory nerves that carry the sense of smell.
What is the difference between zygomatic arch and zygomatic process?
Zygomatic Arch Definition 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.
What is the root of Zygoma?
The zygomatic process of the temporal arises by two roots: an anterior, directed inward in front of the mandibular fossa, where it expands to form the articular tubercle. a posterior, which runs backward above the external acoustic meatus and is continuous with the supramastoid crest.
How many zygomatic bones are there?
There are three zygomatic processes: Zygomatic process of the frontal bone. Zygomatic process of the temporal bone.
What is a bone process?
bone formation, also called ossification, process by which new bone is produced. … The process takes two general forms, one for compact bone, which makes up roughly 80 percent of the skeleton, and the other for cancellous bone, including parts of the skull, the shoulder blades, and the ends of the long bones.
What is a ethmoid bone?
The ethmoid bone is an unpaired cranial bone that is a significant component of the upper nasal cavity and the nasal septum. The ethmoid bone also constitutes the medial orbit wall.
What is the function of the nasal bone?
As the hardest part of the nasal cavity, the nasal bones protect these arteries and nerves from damage. Since the nasal bones are the strongest part of the nose, not only does it house arteries and nerves, but it also supports your nasal septum.
Can the zygomatic bone break?
Following fractures of the nasal bone, zygomatic fractures are the second most common fractures of the face and predominantly occur in males during their twenties and thirties. The zygomatic bone, in particular the malar eminence, plays an important part in the appearance of our faces.
How do I know if my zygomatic bone is broken?
- Flatness of the cheek.
- Altered sensation underneath the eye on the affected side.
- Problems with eyesight.
- Pain with jaw movement.
Can a zygomatic fracture heal on its own?
Zygomatic complex fractures with no or minimal displacement are often treated without surgical intervention, whereas fractures with functional or esthetic impairments in the form of diplopia, extraocular muscle entrapment, malocclusion, restricted mouth opening and/or depression of the malar prominence often …
What is maxilla bone?
The maxilla is the bone that forms your upper jaw. … The maxilla is a major bone of the face. It’s also part of the following structures of your skull: the upper jawbone, which includes the hard palate at the front of your mouth.
Is the zygomatic bone part of the axial skeleton?
The 14 facial bones are the nasal bones, the maxillary bones, zygomatic bones, palatine, vomer, lacrimal bones, the inferior nasal conchae, and the mandible. … Although it is not found in the skull, the hyoid bone is considered a component of the axial skeleton.
What is the function of paranasal sinuses?
They are centered on the nasal cavity and have various functions, including lightening the weight of the head, humidifying and heating inhaled air, increasing the resonance of speech, and serving as a crumple zone to protect vital structures in the event of facial trauma.
What is Pterygoid bone?
The pterygoid is a paired bone forming part of the palate of many vertebrates, behind the palatine bones. It is a flat and thin lamina, united to the medial side of the pterygoid process of the sphenoid bone, and to the perpendicular lamina of the palatine bone.
What are Keystone bones?
The mandible, maxilla, frontal bone, nasal bones, and zygoma are the main bones of the face. … Since it anchors all facial bones except the mandible, the maxilla is known as the “keystone bone” of the face. It is made up of two bones (maxillae) that are fused together in the middle.
What is the function of compact and spongy bone?
The compact bone is the main structure in the body for support, protection, and movement. Due to the strong nature of compact bone, compared to spongy bone, it is the preferred tissue for strength. Spongy bone is used for more active functions of the bones, including blood cell production and ion exchange.
