PATHOLOGY

Detailed explanation-1: -The olfactory nerve is a solely sensory nerve and conveys the sense of smell. Its receptors are located in the olfactory mucosa under the roof of the nasal cavity. The olfactory fibers cross the skull base through the olfactory foramina of the cribriform plate and enter the olfactory bulb in the olfactory groove.

Detailed explanation-2: -Olfactory neurons in the nose can detect and distinguish between tens of thousands of different odor producing substances. They do so by using hundreds of unique sensors called olfactory receptors, each of which responds to a specific type of odor.