Which function is associated with the Olfactory nerve (I)?

Which function is associated with the Olfactory nerve (I)?

• A. Sense of smell.
• B. Vision.
• C. Hearing and balance.
• D. Taste.

Answer: (A)

The olfactory nerve is responsible for sense of smell. Odorant molecules bind to receptors in the nasal epithelium, and the resulting signals travel through axons that pass the cribriform plate to the olfactory bulb. From there, information is relayed to the primary olfactory cortex (and to limbic areas), which explains why smells can provoke strong memories and emotions. The other options map to different senses: vision uses the optic nerve, hearing and balance use the vestibulocochlear nerve, and taste involves gustatory pathways through other cranial nerves.

The olfactory nerve is responsible for sense of smell. Odorant molecules bind to receptors in the nasal epithelium, and the resulting signals travel through axons that pass the cribriform plate to the olfactory bulb. From there, information is relayed to the primary olfactory cortex (and to limbic areas), which explains why smells can provoke strong memories and emotions. The other options map to different senses: vision uses the optic nerve, hearing and balance use the vestibulocochlear nerve, and taste involves gustatory pathways through other cranial nerves.