The vomer is the thin, flat bone which forms the bottom and back portion of the bony |septum| in the |nasal cavity|. The vomer supports the perpendicular plate of the |ethmoid bone|, which forms the upper portion of this |septum|. The vomer extends past the |palatine bone| in the back of the |mouth| cavity, where its rearmost section, the |ala|, connects to the pterigoid ~process~ of the |sphenoid bones| and the forward section of the |occipital bone|, just in front of its |basilar part|.