Olfactory Epithelium: A dime-sized patch of nerve endings situated in the retronasal passage that connects the nose to the mouth. As we inhale through the nose or mouth, this little patch captures airborne aromas and flavors as they pass by and transmits the information to the olfactory bulb, which can distinguish the presence of and identify nearly 10,000 unique aromas even at very low concentrations.

嗅觉上皮：位于连接鼻子和嘴巴的鼻后通道神经末梢的硬币大小的区域。当我们通过鼻子或嘴吸气时，这个神经块可以捕捉空气中的香气和味道，并将信息传送到嗅球。即使香气的浓度很低，嗅球仍可以分辨出几乎10,000种独特的香气