Right eyehole with nerves and muscles, Orbita
Anatomic illustration of the human right eyehole (orbita) with inner nerves and muscles after removing the eyeball (bulbus oculi). In the center is the optic nerve, which is the second cranial nerve (II), with the accompanying opthalmic artery. The bone structure of the orbita consists of different cranial bones, such as the frontal bone, lacrimal bone, ethmoidal bone, maxilla, zygomatic bone and sphenoid bone. The depicted muscles, in clockwise direction, are parts of the levator palpebrae, superior rectus, superior oblique, medial rectus, inferior rectus, and lateral rectus muscle. Each above and under the orbita is a small opening through which nerves exit the cranium. They are called supra- and infraorbital foramen. Accordingly, they contain the supra- and infraorbital nerve.
