Sagittal section of nasal region: frontal sinus  | sphenoid sinus |  superior concha of ethmoid bone |  middle choncha of ethmoid bone | inferior concha (a separate bone) |  eustachian (pharyngotympanic or auditory) canal |  pharyngeal tonsiluvulapalatine bonehard palate (palatine process) of maxillaBrain Structures: cerebellumcorpus callosumfornixpineal glandcorpora quadrigeminaemidbrainponspituitary gland in the sella turcicaoptic chiasma |  intermediate mass of thalamus