developed in co-operation with Prof. Dr. med. Wolfgang Schmidt and Dr. med. Werner Scheller, Anatomical Institute, University of Leipzig. Modelled according to nature, in SOMSO-PLAST®. After removing the calvarium and the lower jaw, the base of the skull – sectioned medially – separates into two halves where the nasal septum, the paranasal sinuses with the nasal conchae, and the ethmoidal bone are shown. The nasal conchae can be removed. The lower jaw is movable. Separates into 9 parts.