What does the inferior orbital fissure connect?
What does the inferior orbital fissure connect?
The IOF or sphenomaxillary fissure is defined as a space between the lateral wall and floor of the orbit. This fissure runs in an anterolateral direction from the maxillary strut posteriorly to the zygomatic bone anteriorly. The IOF joins the orbit with the pterygopalatine, infratemporal, and temporal fossae.
What nerve goes through the inferior orbital fissure?
The zygomatic nerve starts within the pterygopalatine fossa and enters the orbit via the inferior orbital fissure dividing into two named branches, that is, zygomaticotemporal and zygomaticofacial nerves.
Where does inferior orbital fissure open?
The inferior orbital fissure (IOF) lies in the floor of the orbit inferior to the superior orbital fissure and it is bounded superiorly by the greater wing of sphenoid, inferiorly by maxilla and orbital process of palatine bone and laterally by the zygomatic bone. It opens into posterolateral aspect of orbital floor.
What leaves the inferior orbital fissure?
The lateral wall and the floor of the orbit are separated posteriorly by the inferior orbital fissure which transmits the maxillary nerve and its zygomatic branch, and the ascending branches from the pterygopalatine ganglion.
Does infraorbital nerve pass 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.
Which bones have fissures?
Examples can be seen in the facet joints of the vertebrae, which allow for flexion and extension of the spine. Fissure – An open slit in a bone that usually houses nerves and blood vessels. Examples include superior and inferior orbital fissure.
Does Infraorbital nerve pass through inferior orbital fissure?
Which does not pass through the inferior orbital fissure?
Correct Answer: Ophthalmic artery.
Is inferior orbital fissure in middle cranial fossa?
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….
| Inferior orbital fissure | |
|---|---|
| FMA | 54802 |
| Anatomical terminology |
What are the orbital fissures?
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 through inferior orbital foramen?
Anatomical terms of bone In human anatomy, the infraorbital foramen is an opening in the maxillary bone of the skull located below the infraorbital margin of the orbit. It transmits the infraorbital artery and vein, and the infraorbital nerve, a branch of the maxillary nerve.
What passes through Supraorbital fissure?
It lies between the lesser and greater wings of the sphenoid bone. It allows for many structures to pass, including the oculomotor nerve, the trochlear nerve, the ophthalmic nerve, the abducens nerve, the ophthalmic vein, and sympathetic fibres from the cavernous plexus.
Where is the inferior fissure of the orbit?
Dr Andrew Dixon ◉ and Dr Prashant Mudgal et al. The inferior orbital fissure (IOF) lies in the floor of the orbit inferior to the superior orbital fissure and it is bounded superiorly by the greater wing of sphenoid, inferiorly by maxilla and orbital process of palatine bone and laterally by the zygomatic bone.
What is the meaning of the word fissure?
inferior orbital fissure. in·fe·ri·or or·bi·tal fis·sure. a gap or cleft between the greater wing of the sphenoid and the orbital plate of the maxilla, through which pass the maxillary nerve and the inferior ophthalmic vein or its communicating branches to the pterygoid venous plexus in the infratemporal fossa.
Where are the infraorbital vessels located in the orbit?
Inferior orbital fissure. The medial wall and the floor of the orbit are separated posteriorly by the inferior orbital fissure which transmits the zygomatic branch of the maxillary nerve and the ascending branches from the pterygopalatine ganglion. The infraorbital vessels are found in the inferior orbital fissure,…
Where is the fissure in the skull located?
Inferior orbital fissure. The skull from the front. (Label for inferior orbital fissure is at center right.) The medial wall and the floor of the orbit are separated posteriorly by the inferior orbital fissure which transmits the zygomatic branch of the maxillary nerve and the ascending branches from the pterygopalatine ganglion.