Sphenoid

The medial wall is formed primarily by the orbital plate of ethmoid, as well as contributions from the frontal process of maxilla, the lacrimal bone, and a small part of the body of the sphenoid. It is the thinnest wall of the orbit, evidenced by pneumatized ethmoidal cells.

The bone that is present in our eye is called the "orbit" or the "eye socket". It is a bony cavity in the skull that houses and protects the eyeball and its associated structures. The orbit is a complex structure composed of several bones that work together to create a stable and protective environment for the eye.

Structure of the Orbit:
The orbit is formed by seven bones, which include:
1. Frontal bone: Forms the superior aspect of the orbit.
2. Zygomatic bone: Forms the lateral aspect of the orbit.
3. Maxillary bone: Forms the floor of the orbit.
4. Palatine bone: Forms a small part of the floor of the orbit.
5. Lacrimal bone: Forms a small part of the medial aspect of the orbit.
6. Ethmoid bone: Forms a posterior part of the medial aspect of the orbit.
7. Sphenoid bone: Forms the posterior aspect of the orbit and part of its floor.

Functions of the Orbit:
The orbit serves several important functions, including:
1. Protection: The bony walls of the orbit protect the delicate structures of the eye from external trauma and injuries.
2. Support: The orbit provides structural support to the eyeball, allowing it to maintain its position and shape.
3. Attachment: Various muscles responsible for eye movements are attached to the bones of the orbit, allowing for coordinated eye movements.
4. Passage of nerves and blood vessels: The orbit contains openings and canals through which important nerves and blood vessels pass to supply the eye and its surrounding structures.

Key Points:
- The orbit is a bony cavity in the skull that houses and protects the eye.
- It is formed by seven bones, including the frontal, zygomatic, maxillary, palatine, lacrimal, ethmoid, and sphenoid bones.
- The orbit serves functions such as protection, support, attachment for muscles, and passage of nerves and blood vessels.
- The orbit creates a stable and protective environment for the eyeball and its associated structures.