<prompt> The roof of the olfactory region is formed by?Nasal honeCribriform plate of ethmoidSphenoidTemporal bone  <response>: Roof of olfactory region of nasal cavity is formed by cribriform plate of ethmoid boneQ.Other bones paicipating in non- olfactory roof formation are body of sphenoid, frontal bone, nasal bone and nasal cailages. 