List the three anatomic compartments into which the orbit is partitioned by the rectus muscles. List the three major foramina of the orbit. Name the four segments into which radiologists divide the optic nerve for clinical purposes. What are the parts of the intraconal space? What is the blood supply to the globe? What is the blood supply to the muscles and surrounding structures? What structures pass through each orbital foramen? Book traversal links for Orbit anatomy ‹ What tissue serves as a natural low-density contrast on CT? Up List the three anatomic compartments into which the orbit is partitioned by the rectus muscles. ›