Anatomy Of The Eye Socket
As we journey through the different structures refer to the diagrams to quickly digest the content on this page. The orbit is the bony eye socket of the skull.
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This is a strong layer of tissue that covers nearly the entire surface of the eyeball.
Anatomy of the eye socket. Sources and flow tears are much more complex than mere salty water tears are introduced into the conjunctival sac to sheet over the eye in a tear film and exit the eye into the nose via the lacrimal excretory drainage system. Socket represents the preop sac. Anatomy of the human eye.
The eye sits in a protective bony socket called the orbit. Although much of the socket encloses the eye some of it protrudes beyond and can be readily felt behind the eyebrow. They enclose the eyeball and its associated structures.
The orbital contents comprise the eye the orbital and retrobulbar fascia extraocular muscles cranial nerves ii iii iv v and vi blood vessels fat the lacrimal gland with its sac and duct the eyelids. They enclose the eyeball and its associated structures. Muscle and fibrous attachments are preserved as much as feasible.
These muscles move the eye up and down and side to side and rotate the eye. Six extraocular muscles in the orbit are attached to the eye. The eye is protected from mechanical injury by being enclosed in a socket or orbit which is made up of portions of several of the bones of the skull to form a four sided pyramid the apex of which points back into the head.
The orbit is formed by the cheekbone the forehead the temple and the side of the nose. The extraocular muscles are attached to the white part of the eye called the sclera. In anatomy the orbit is the cavity or socket of the skull in which the eye and its appendages are situated.
The diagrams below show cross sections of the human eyeball. In this article we shall look at the borders contents and clinical correlations of the bony orbit. In the adult human the volume of the orbit is 30 millilitres of which the eye occupies 6 5 ml.
In addition to the eyeball itself the orbit contains the muscles that move the eye blood vessels and nerves. The eye is cushioned within the orbit by pads of fat. Orbit can refer to the bony socket or it can also be used to imply the contents.
The bony orbits or eye sockets are bilateral and symmetrical cavities in the head. Eye sockets are cavities that essentially cup the eyes. Thus the floor of the orbit is made up of parts of the maxilla zygomatic and palatine bones while the roof is made up of the orbital plate of the frontal bone and behind this by the lesser wing of the sphenoid.
Several skull bones make up a socket and these bones join to form a four walled pyramid behind each eye. Our eyeballs are fairly round organs cushioned by fatty tissues and they sit in two bony sockets inside the skull.
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