What is "olfactory nerve"?

The olfactory nerve, also known as cranial nerve I, is a sensory nerve responsible for the sense of smell. It originates in the olfactory epithelium, located in the nasal cavity, and carries information about odors from the nasal passages to the brain. The olfactory nerve consists of bundles of sensory fibers that transmit signals to the olfactory bulb, which is part of the brain's limbic system. From the olfactory bulb, the information is processed and interpreted, allowing us to perceive and distinguish various smells. The olfactory nerve plays a crucial role in our ability to detect and recognize scents, which can evoke powerful emotions and memories.