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Nov 3, 2023 · 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.
- Maxillary Sinus
The maxillary sinus is the largest paranasal sinus situated...
- Lacrimal Apparatus
Bulbar conjunctiva (cranial view) Anatomy and parts Lacrimal...
- Maxillary Sinus
In anatomy, the orbit is the cavity or socket/hole of the skull in which the eye and its appendages are situated. "Orbit" can refer to the bony socket, [ 1 ] or it can also be used to imply the contents. [ 2 ] In the adult human, the volume of the orbit is about 28 millilitres (0.99 imp fl oz; 0.95 US fl oz), [ 3 ] of which the eye occupies 6.5 ...
Jun 25, 2024 · Orbital rim fracture – This is a fracture of the bones forming the outer rim of the bony orbit. It usually occurs at the sutures joining the three bones of the orbital rim – the maxilla, zygomatic and frontal. ‘Blowout’ fracture – This refers to partial herniation of the orbital contents through one of its walls.
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Jul 24, 2023 · The orbital septum is a connective tissue structure that acts as an anterior border between the facial skin and fat and the orbital contents, impeding the spread of infection into the orbit. [2] The lacrimal gland, a secretory gland comprising acini and ducts, produces tears and maintains the microenvironment of the eye.
- Nicholas Luibil, Michael J. Lopez, Bhupendra C. Patel
- 2023/07/24
- 2019
Jul 24, 2023 · The following seven bones form the orbit: The orbit is a pear shape, with the optic nerve at the stem, and holds approximately 30 cc volume. The entrance to the globe anteriorly is approximately 35 mm high and 45 mm wide. The depth from orbital rim to the orbital apex measures 40 to 45 mm in adults. The maximum width is 1 cm behind the anterior ...
- Caleb L. Shumway, Mahsaw Motlagh, Matthew Wade
- 2023/07/24
- 2021
Jun 7, 2024 · The orbit has a roof, floor, medial and lateral wall. The orbit is open anteriorly where it is bound by the orbital septum, which forms part of the eyelids. Posteriorly, the orbit angles inward such that their apices communicate with the intracranial compartment via the optic canal and superior orbital fissure. Contents. globe ; extraocular muscles
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Fragmented bony lamellae and orbital soft tissues usually prolapse into the air filled paranasal sinuses, (ie, the maxillary antrum or ethmoid sinus), resulting in an increase in the orbital volume. Similarly, a decrease in volume and compression of the orbital contents occurs when orbital wall fragments are displaced into the orbit.
