Optic canal: Anatomy and function - Kenhub
2024年3月6日 · The optic canal is a round opening located in the posteromedial part of the orbit, within the lesser wing of the sphenoid bone, when viewing the orbit from an anterior perspective. It lies just medial to the larger superior orbital fissure, and serves as a conduit connecting the orbit to the middle cranial fossa.
Optic canal - Wikipedia
The optic foramen is the opening to the optic canal. The canal is located in the sphenoid bone; it is bounded medially by the body of the sphenoid and laterally by the lesser wing of the sphenoid.
Anatomy, Head and Neck, Optic Canal - StatPearls - NCBI Bookshelf
2023年8月8日 · The optic canal is a funnel-like structure as part of the sphenoid bone that extends from the optic foramen to the orbital apex, the posterior-most end of the orbit. The orbital apex consists of the optic canal and the superior orbital fissure.
Bones of the orbit: Anatomy, foramina, walls and diagram - Kenhub
2023年11月3日 · The apex of the orbit is the optic foramen (canal), bound medially by the body of the sphenoid bone and laterally by the lesser wing of the sphenoid bone. It is medial to the superior orbital fissure. The optic foramen provides passage for the optic nerve (CN II) and ophthalmic artery to exit the skull.
Optic canal - e-Anatomy - IMAIOS
The optic canal is a funnel-shaped (narrowest anteriorly) structure as part of the sphenoid bone that extends from the optic foramen to the orbital apex, the posterior-most end of the orbit. It is directed forward, laterally, and somewhat downward and conducts the optic nerve, the ophthalmic artery, and sympathetic fibers from the carotid plexus.
Optic Canal - an overview | ScienceDirect Topics
The intracanalicular portion of the optic nerve passes through the optic canal (foramen), accompanied by the ophthalmic artery and sympathetic nerves. The dura surrounding the nerve splits at the orbital opening, the majority continuing as the dural sheath of the nerve inside the canal and a thinner portion blending with the periorbita ( Fig. 1 ...
Orbital Anatomy: Anatomical Relationships of Surrounding …
Optic Canal. The optic canal is located in the sphenoid bone medial to the SOF extending in a superior medial direction from the orbital apex to the optic foramen ( Figs. 2 and 3). The optic canal is funnel-shaped, narrower anteriorly near the orbit, and is bounded laterally by the lesser wing of the sphenoid and anterior clinoid process and ...
Neuroanatomy, Optic Tract - StatPearls - NCBI Bookshelf
2023年7月24日 · The optic canal is an obliquely oriented channel through the lesser wing of the sphenoid bone, opening into the bony skull base as the optic foramen. The intracranial optic nerve segment enters the middle cranial fossa and joins the contralateral optic nerve segment, forming the optic chiasm in the suprasellar cistern.
Optic Canal - SpringerLink
2023年9月29日 · The optic canal is a funnel-like tubal structure as part of the sphenoidal bone that extends from the optic foramen to the orbital apex. The optic canal transmits the optic nerve, meningeal sheaths, ophthalmic artery, and sympathetic nerve fibers .
The embryological develop-ment of the optic canal starts at the third gestation month and can be divided into three stages: (1) cartilaginous formation of the optic foramen, (2) ossification of the cartilaginous optic foramen, and (3) formation of the optic canal.