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 tonsil | uvula | palatine bone | hard palate (palatine process) of maxilla | Brain Structures: cerebellum | corpus callosum | fornix | pineal gland | corpora quadrigeminae | midbrain | pons | pituitary gland in the sella turcica | optic chiasma |  intermediate mass of thalamus |