The term "orbital cavity" refers to a complex anatomical structure present in the skull of vertebrates, particularly humans. It is also known as the eye socket or eye orbit. The orbital cavity is a bony socket that houses and protects the eyeball and associated structures, including muscles, blood vessels, nerves, and fat.
An important function of the orbital cavity is to provide a stable and secure space for the eyeball to sit, enabling smooth eye movement. It is also responsible for maintaining the correct positioning of the eye within the skull, ensuring proper functioning of vision. Additionally, the orbital cavity acts as a protective shield, shielding the delicate structures of the eye from potential injury or external trauma.
The orbital cavity is formed by several bones that fuse together during development, including the frontal bone, zygomatic bone, maxilla bone, lacrimal bone, ethmoid bone, and sphenoid bone. These bones create a hollow, cone-shaped space that accommodates the eyeball and its surrounding structures.
The walls of the orbital cavity are lined with a smooth periosteum and contain various soft tissues such as fat, muscles, and connective tissue. These tissues provide cushioning and support for the eye, regulate eye movements, and maintain the shape of the orbital cavity.
In summary, the orbital cavity is a vital anatomical structure within the skull that houses and protects the eye, facilitates eye movements, and provides structural support and cushioning for the eyeball and associated tissues.
