Zygomatico-orbital foramina

Anatomical feature of the skull

The zygomatico-orbital foramina are small openings located in the zygomatic bone of the human skull. These foramina serve as passageways for the zygomaticotemporal nerve and the zygomaticofacial nerve, which are branches of the zygomatic nerve, itself a branch of the maxillary nerve (CN V2).

Anatomy

The zygomatico-orbital foramina are typically found on the orbital surface of the zygomatic bone. They are usually two in number, although variations can occur, with some individuals having a single foramen or multiple foramina. These foramina are important anatomical landmarks in the study of the orbit and the zygomatic arch.

Location

The zygomatico-orbital foramina are located near the junction of the zygomatic bone with the sphenoid bone and the maxilla. They are positioned superiorly on the lateral wall of the orbit, providing a conduit for nerves and vessels to pass from the orbit to the face.

Contents

The primary contents of the zygomatico-orbital foramina are the zygomaticotemporal and zygomaticofacial nerves. These nerves provide sensory innervation to the skin over the zygomatic arch and the lateral aspect of the forehead and cheek.

Clinical significance

Understanding the location and contents of the zygomatico-orbital foramina is crucial in surgical procedures involving the orbit and the zygomatic bone. Damage to the nerves passing through these foramina can result in sensory deficits in their respective areas of innervation.

Related pages

• Zygomatic bone
• Orbit (anatomy)
• Maxillary nerve
• Zygomatic nerve