THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The orbit is the bony cavity that contains the eyeball, muscles, nerves, and blood vessels, as well as the structures that produce and drain tears.

Detailed explanation-2: -The orbital cavities are large bony sockets that house the eyeballs with associated muscles, nerves, blood vessels and fat. Each orbit is pear-shaped with the optic nerve representing the stem. The medial walls of the orbit are almost parallel and border the nasal cavity anteriorly.

Detailed explanation-3: -The orbits are symmetrical paired structures separated by the nasal cavity and paranasal sinuses. Seven bones form each orbit: frontal, sphenoid, maxillary, zygomatic, palatine, ethmoid, and lacrimal. The orbital roof is formed by the lesser wing of the sphenoid bone and the frontal bone.

Detailed explanation-4: -The orbit is the part of the face that houses the eye. It includes the eye socket and all of its parts, such as muscles, nerves, lymphatics, blood vessels, the structures that produce tears, and the eyelids. The brain is located just above and behind the orbit.