The sections of the |ethmoid bone| are located between the |orbits|, forming part of the inner wall of the orbital cavity and lateral wall and part of the roof of the |nasal cavity|. The segment of the |ethmoid bone| which forms part of the inner wall of the orbital cavity is called the orbital plate, while another segment, forming the roof and back part of the |septum| of the |nasal cavity| is called the perpendicular plate. Two irregularly shaped, shell-like projections from the |ethmoid bone| are called the superior and middle turbinate (conchae), which form ledges on the inside wall of the |nasal cavity|.
