Nose and Olfactory Organ Model, 4 times full-sizeThe nose halves are medially divided, from the base of the skull to the gum. This nose and olfactory organ model shows the nose septum with vessels and nerves (right side), all structures of the inner nasal cavity (left side), sinus and the opening of the Eustachian tube (left side). Parts of the nose and olfactory organ are numbered and described on the outside. Nose and olfactory organ model on a rotating base.