What are superior orbital fissures?
The superior orbital fissure is a bony cleft found at the orbital apex between the roof and lateral wall. It is a communication between the orbital cavity and middle cranial fossa and is bounded by the greater wing, lesser wing and body of sphenoid.
What are the orbital fissures?
The superior orbital fissure is a foramen in the skull, although strictly it is more of a cleft, lying between the lesser and greater wings of the sphenoid bone….
| Superior orbital fissure | |
|---|---|
| FMA | 54799 |
| Anatomical terms of bone |
Which bones form the superior orbital fissure?
The superior orbital fissure lies between the greater and lesser wings of the sphenoid bone. Passing through the superior orbital fissure into the orbit and above the common tendinous ring are the lacrimal nerve of CN V1, the frontal nerve of CN V1, CN IV (trochlear nerve), and the superior ophthalmic vein.
How superior orbital fissure is formed?
The superior orbital fissure is the communication between the cavernous sinus and the apex of the orbit. It is straddled by the tendinous ring which is the common origin of the four rectus muscles (extraocular muscles).
What passes in superior orbital fissure?
This fissure, which separates the greater and lesser wings of the sphenoid and lies between the optic foramen and the foramen rotundum, provides passage to the three motor nerves to the extraocular muscles of the orbit: oculomotor nerve (CN III), trochlear nerve (CN IV), and abducens nerve (CN VI).
What passes thru the superior orbital fissure?
The order of the nerves passing through the superior orbital fissure from superior to inferior: L: lacrimal nerve (branch of CN V1) F: frontal nerve (branch of CN V1) T: trochlear nerve (CN IV)
What comes out of the superior orbital fissure?
Does ophthalmic artery pass through superior orbital fissure?
Structures passing through this fissure : superior and inferior divisions of oculomotor nerve (III), trochlear nerve (IV), lacrimal, frontal and nasociliary branches of ophthalmic (V1), abducens nerve (VI), superior and inferior divisions of ophthalmic vein, inferior division also passes through the inferior orbital …
What is the function of the superior orbital fissure?
What passes through the superior orbital fissure?
The frontal nerve passes through the superior orbital fissure, which is a foramen, or hole, in the human skull located between the greater and lesser wings of the sphenoid bone , which is the area behind the eye in the back of the eye socket. Halfway between the base, which is the part of the eye socket…
What goes through inferior orbital fissure?
The infraorbital vessels are found in the inferior orbital fissure, and travel down the infraorbital groove into the infraorbital canal and exit through the infraorbital foramen. Inferior division of ophthalmic vein passes through the inferior orbital fissure. It is formed by the sphenoid bone and maxilla.
Which bones form the inferior orbital fissure?
The two bones making up the inferior orbital fissure are the sphenoid bone and the maxilla. Ad. The sphenoid bone is a tapered bone that sits just anterior or in front of the temporal bone at the side of the face, the section commonly referred to as the temples.
What is superior orbital?
The superior orbital fissure is a foramen in the skull, although strictly it is more of a cleft, lying between the lesser and greater wings of the sphenoid bone .