Dandelion is an herb. People use the above ground parts and root to make medicine. Dandelion is used for many conditions, but so far, there isnât enough scientific evidence to determine whether or not it is effective for any of them.
The olfactory epithelium is a layer of odor-sensitive cells located inside the depths of the nose. These cells react to odors as they enter the nose, sending signals to the olfactory bulb.
Olfaction is not currently considered to be part of the limbic system but is discussed here for convenience. Olfactory receptors and cranial nerve I: The olfactory receptors are neurons within the olfactory epithelium (#15100) located in the upper nasal cavity.