Orbital bone

Orbital Bone

The Orbital Bone is a complex structure that forms the eye socket in the skull. It is composed of seven bones that come together to form a four-sided pyramid-like shape. The bones include the frontal, zygomatic, maxillary, sphenoid, ethmoid, lacrimal, and palatine.

Orbital bones of the human skull

Structure

The orbital bone is not a single bone but a complex structure formed by the convergence of seven bones. These bones form the walls of the orbital cavity, which houses the eye, extraocular muscles, optic nerve, and other important structures.

Frontal Bone

The frontal bone forms the superior (upper) wall of the orbit. It is one of the major bones of the skull and contributes to the shape and structure of the forehead.

Zygomatic Bone

The zygomatic bone forms the lateral (side) wall of the orbit. It is also known as the cheekbone.

Maxillary Bone

The maxillary bone forms the inferior (lower) wall of the orbit. It is one of the major bones of the face and contributes to the shape of the upper jaw.

Sphenoid Bone

The sphenoid bone forms the posterior (back) wall of the orbit. It is one of the most complex bones in the human body, with a unique butterfly-like shape.

Ethmoid Bone

The ethmoid bone forms part of the medial (inner) wall of the orbit. It is a light, porous bone located between the eyes.

Lacrimal Bone

The lacrimal bone is the smallest bone in the human face and forms part of the medial wall of the orbit.

Palatine Bone

The palatine bone contributes to the floor of the orbit but is primarily located further back in the nasal cavity.

Clinical Significance

Due to its location and function, the orbital bone can be affected by various conditions, including orbital fractures, orbital cellulitis, and orbital tumors. These conditions can lead to vision problems, pain, and other symptoms.

See Also

• Human skull
• Eye socket
• Facial bones

References

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