The nasal septum is primarily made up of two bones: the vomer and the perpendicular plate of the ethmoid bone.
The vomer is a thin, flat bone that forms the lower portion of the nasal septum. It resembles a plowshare in shape and is situated vertically in the midline of the nasal cavity. The perpendicular plate of the ethmoid bone contributes to the upper part of the septum and is a thin, vertical bony structure that extends downwards from the ethmoid bone, which is located between the eyes.
These two bones work together to separate the nasal cavity into the right and left sides, aiding in the function of the respiratory system and the overall anatomy of the nasal region.