the olfactory neuroepithelium is composed of receptor and supporting cells and olfactory glands of Bowman, located in the superior part of the nasal cavities. The receptor cells are neurons with dendritic extensions into the overlying mucus and axons that transverse the cribriform plate as the olfactory fila and synapse with second-order neurons in the glomeruli of the olfactory bulb. SYN: organum olfactus [TA], olfactory organ, organ of smell.