"infra-orbital nerve (from the maxillary division of the trigeminal nerve)"
"infra-orbital artery (from the maxillary artery) and vein"
"The orbitalis muscle 2 is a small vestigial smooth muscle that may cover part of the fissure of the infra-orbital groove where it blends in with the periosteum. It is of unknown significance in humans, but in some animals may help control the volume of the orbit and aid in autonomic regulation of orbital blood vessels."
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"Contents"