What nerves go through 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 through Fissura Orbitalis superior?
The lacrimal, frontal and trochlear nerves, as well as the ophthalmic vein, pass through the superior orbital fissure outside of the annulus of Zinn. The superior and inferior divisions of cranial nerve III, cranial nerve VI, and the nasociliary nerve pass through the fissure within the Annulus of Zinn.
What forms the superior orbital fissure?
SO: superior division of the oculomotor nerve (CN III) N: nasociliary nerve (branch of CN V1) IO: inferior division of the oculomotor nerve (CN III) A: abducens nerve (CN VI)
What passes through Fissura Orbitalis inferior?
It transmits the: infra-orbital nerve (from the maxillary division of trigeminal nerve) zygomatic nerve (from the maxillary division of trigeminal nerve) a branch of the inferior ophthalmic vein and several emissary veins connecting it to the pterygoid venous plexus.
Which of the following 4 cranial nerves pass through the superior orbital fissure to enter the eye orbit?
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.
What passes through superior and inferior 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 bone is the superior orbital fissure on?
the sphenoid bone
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.
What is zygomatic nerve?
Medical Definition of zygomatic nerve : a branch of the maxillary nerve that divides into a facial branch supplying the skin of the prominent part of the cheek and a temporal branch supplying the skin of the anterior temporal region.
What are the superior and inferior orbital fissure?
The superior orbital fissure is bounded by the lesser and greater wings of the sphenoid. The greater wing of the sphenoid, the maxilla, and the palatine bones of the orbit form the boundaries of the inferior orbital fissure. The optic canal is at the apex of the orbit and lies within the sphenoid bone.
Which cranial fossa is the superior orbital fissure in?
The superior orbital fissure is a foramen or cleft in the skull. It lies between the lesser and greater wings of the sphenoid bone.
What separates superior orbital fissure from optic canal?
The optic foramen, through which the optic nerve and ophthalmic artery run, lies just superior and medial to the superior orbital fissure in the lesser wing of the sphenoid. It is separated by the optic strut.