Zygomatic arch

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Zygomatic Arch

The Zygomatic Arch (pronounced: zai-go-mat-ik arch) is a prominent facial bone that forms part of the skull. It is also known as the cheekbone.

Etymology

The term "Zygomatic" is derived from the Greek word "zygon", which means "yoke". This is in reference to the arch's yoke-like shape. The term "arch" is derived from the Latin word "arcus", which means "bow" or "arch".

Anatomy

The Zygomatic Arch is formed by the union of two bones: the Zygomatic Bone and the Temporal Bone. The Zygomatic Bone forms the anterior portion, while the Temporal Bone forms the posterior portion. The arch serves as the attachment point for various muscles, including the Masseter Muscle, which is involved in mastication (chewing).

Clinical Significance

Due to its prominence, the Zygomatic Arch is often involved in facial traumas. Fractures of the Zygomatic Arch can lead to Trismus, a condition characterized by difficulty in opening the mouth. Surgical intervention may be required in severe cases.

Related Terms

  • Zygomatic Bone: The bone that forms the prominent part of the cheek and contributes to the Zygomatic Arch.
  • Temporal Bone: The bone that forms part of the side of the skull and contributes to the Zygomatic Arch.
  • Masseter Muscle: The muscle that attaches to the Zygomatic Arch and is involved in mastication.
  • Trismus: A condition characterized by difficulty in opening the mouth, often resulting from a fracture of the Zygomatic Arch.

External links

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