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 function of cheekbones?
They are important contributors to mastication or chewing, providing an attachment point for the masseter muscle – a jaw adductor that closes the jaw. In addition, the cheekbone contributes to the structure of the eye orbits and our ability to articulate.
What’s the zygomatic bone?
The zygomatic bones are a pair of diamond-shaped, irregularly-shaped bones that protrude laterally and form the prominence of the cheeks, a portion of the lateral wall, the orbit floor, and some portions of the temporal fossa and infratemporal fossa.
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.
What is zygomatic bone and process?
The zygomatic bone (zygoma) is an irregularly shaped bone of the skull. … Besides forming the prominence of the cheek, the zygomatic bone also contributes to the formation of the zygomatic arch, the walls of the temporal and infratemporal fossae, and the floor and lateral wall of the bony orbit.
Why is it called the zygomatic bone?
Zygomatic bone: The part of the temporal bone of the skull that forms the prominence of the cheek. … 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.
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What causes zygomatic swelling?
Sublingual mucocele is also called a ranula and is a swelling under the tongue. This type of mucocele is caused by damage to the sublingual ducts or the sublingual salivary gland. Zygomatic mucocele is due to damage to the zygomatic gland and causes a swelling below the eye.
Is the zygomatic bone a flat bone?
Irregular Bones.
They consist of cancellous tissue enclosed within a thin layer of compact bone. The irregular bones are: the vertebræ, sacrum, coccyx, temporal, sphenoid, ethmoid, zygomatic, maxilla, mandible, palatine, inferior nasal concha, and hyoid.
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 does zygomatic bone articulate with?
The zygomatic bone articulates with the sphenoid bone, maxilla, frontal bone, and temporal bone to form the lateral wall of the floor of the orbit, part of the temporal and infratemporal fossa, and the prominence of the cheek.
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.
Where is the zygomatic bone located?
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.
Which bone is not a part of the orbit?
All bones of the orbit articulate among themselves, except for the sphenoid bone and maxilla. There is no suture between them, as they are separated by the inferior orbital fissure.
What causes zygomatic bone pain?
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.
What is zygomatic nerve?
The zygomatic nerve is a branch of the maxillary nerve, itself a branch of the trigeminal nerve (CN V). It travels through the orbit and divides into the zygomaticotemporal and the zygomaticofacial nerve. It provides sensory supply to skin over the zygomatic bone and the temporal bone.
How do I know if my zygomatic bone is broken?
Broken cheekbone/upper jaw (zygomatic maxillary fracture)
- Flatness of the cheek.
- Altered sensation underneath the eye on the affected side.
- Problems with eyesight.
- Pain with jaw movement.
What are the functions of the periosteum?
The periosteum helps bone growth. The outer periosteum layer contributes to the blood supply of your bones and the surrounding muscles. It also contains the network of nerve fibers that transmit messages throughout your body. The inner layer helps to protect your bones and stimulates repair after an injury or fracture.
What is the function of short bones?
Short bones have very equal proportions and are roughly shaped like a cube. Examples can be found in the bones of your wrists and ankles. Short bones provide stability to the wrist and ankle joints and also help facilitate some movements.
What are the functions of compact and spongy bone?
Spongy bone is used for more active functions of the bones, including blood cell production and ion exchange. However, compact bones also serve a function in storing and releasing calcium to the body when needed. The compact bone also provide strong mechanical levers, against which the muscles can create movement.
Which complication can result from a Zygoma fracture?
Malunion is the most common complication of zygomatic fractures and is the result of improper reduction and fixation, resulting in malocclusion, facial asymmetry, and enophthalmos.
Can you break your zygomatic bone?
Zygomatic arch fractures
After the nasal bone, the zygoma is the second most common bone of the face to be fractured. The group at highest risk is young males. Aetiology is usually blunt trauma to the cheek, such as involved in: Assault.
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 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.
What are the two bones that form the zygomatic arch?
The facial area includes the zygomatic, or malar, bones (cheekbones), which join with the temporal and maxillary bones to form the zygomatic arch below the eye socket, the palatine bone, and the maxillary, or upper jaw, bones.
What is maxilla bone?
The maxilla is the bone that forms your upper jaw. The right and left halves of the maxilla are irregularly shaped bones that fuse together in the middle of the skull, below the nose, in an area known as the intermaxillary suture.
What is the nose bone?
The nasal bones are two oblong halves that meet to form the bridge of your nose. The nasofrontal suture, which is a rigid fibrous joint that connects the two halves of the nasal bones, forms the thickest part of the nose.
Where is the ethmoid?
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 common name for tibia?
tibia, also called shin, inner and larger of the two bones of the lower leg in vertebrates—the other is the fibula.
Why do the nerves in my face hurt?
Trigeminal neuralgia usually occurs spontaneously, but is sometimes associated with facial trauma or dental procedures. The condition may be caused by a blood vessel pressing against the trigeminal nerve, also known as vascular compression.
Why do the bones in my face hurt?
Possible causes of facial pain. Facial pain is common and often the result of headaches and injuries. However, other causes of facial pain include nerve conditions, jaw and dental problems, and infections. Facial pain can originate from a specific area of the face, or it may radiate from another part of the head.
Why do my cheekbones hurt when I touch them?
If wiping away an eyelash from your cheek or brushing your teeth results in an intense, stabbing pain, it’s likely you have a condition known as trigeminal neuralgia.
What muscles does zygomatic nerve innervate?
The zygomatic nerve innervates the majority of the lateral lower eyelid. The nasociliary nerve, a branch of the maxillary branch of CN V, provides sensory innervation to the cornea.
What is geniculate ganglion?
The geniculate ganglion is a sensory ganglion of the facial nerve (CN VII). It contains the cell bodies of the fibers responsible for conducting taste sensation from the anterior two-thirds of the tongue.
Where is the zygomatic foramen?
The zygomaticofacial foramen is a small foramen in the mid lateral surface of the zygomatic bone that transmits the zygomaticofacial nerve (a branch of the zygomatic nerve from the maxillary division of the trigeminal nerve) and zygomaticofacial vessels.