Final answer:
The olfactory tract carries impulses associated with the sense of smell. Olfactory receptors in the nasal cavity detect odorant molecules, which then bind to receptor proteins on olfactory neurons. These neurons transmit signals to the olfactory bulb in the brain.
Step-by-step explanation:
The olfactory tract carries impulses associated with the sense of smell. Olfactory receptors in the nasal cavity detect odorant molecules in the air, which then bind to receptor proteins on olfactory neurons. These neurons transmit the signals as action potentials through the olfactory tract to the olfactory bulb in the brain. From there, the signals are processed in various brain regions, including the primary olfactory cortex, limbic system, and hypothalamus, where smells become associated with memories and emotions.