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zygomatic Bone

[ Author:Fushun Ma | Time:2011-10-20 09:57:34 |  Font Size: [Large Medium Small]
Tags: zygomatic bone function surgery anatomy

 Zygomatic Bone is the important human facial bone. The bones in a human head can be divided into two categories the cranium and the maxilla. The cranium is composed of 8 bones which contain and protect the brain. The maxilla indicates the other 14 bones of the human head except the cranium. There are two zygomatic bones located on right and left side of the face separately. They are two of the 14 maxillary bones. They are the third largest maxillary bones next to the mandible and upper maxillary bones. They are located on the lower lateral part of the obit in a irregular diamond shape with a rough surface. The zygomatic bone constitute the highest peak pointing to the front lateral direction. The diamond shaped zygomatic bone has four processes. They are the frontosphenoidal process, the maxillary process, the temporal process and the orbital process. The temporal process reaches backward to the zygomatic process of the temporal bone. These two processes joined together forming the zygomatic arch. The zygomatic arch located on each side of the skull, shaped in an lateral directed arch. Its upper edge is sharp and it can be easily pulped on the side of the face.

zygomatic bone location of the zygomatic bone
The relationship of the zygomatic bone in the human head. The zygomatic bone is in the green line on the right side picture. It is located on the lateral inferior of the obital cave and the most laterally protruding bone in a human face.

 The zygomatic bone categories in flat bone is composed of the surface hard shell and the loose core. The zygomatic bone surface under the skin also known as the cheek surface is convex with a zygomatic facial foramen in the middle of the bone letting the zygomaticofacial nerve and vessels to pass through. Below this foramen is a slightly elevation which indicates the origin of the zygomatic arch. The zygomatic bone surface facing the brain is the temporal surface concaved inner posteriorly.

The frontal bone is located superiorly to the zygomatic bone, the maxilla inferior and proximately, the temporal bone and the sphenoid bone lateral posteriorly. The zygomati bone's anterior margin, smooth and rounded, is part of the circumference of the orbit. Its superior margin, rough, and directed horizontally, the attachment potion of the origin of the masseter muscle.

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