Question

olfaction: sense of smell
explain the structures and functions of this system.
what makes this sense unique compared to our other senses?
pheromones: chemical signals with inter - individual behavioral impact
it has the ability to detect a wide range of substances
it has a direct link to the limbic system, its ability to detect substances

Explanation:

The sense of smell (olfaction) is unique as it can detect a vast array of chemical substances. It has a direct link to the limbic system, which is involved in emotions and memory. The olfactory system consists of olfactory receptors in the nasal cavity that detect odor - molecules and send neural signals to the brain for interpretation. This ability to detect chemicals and its connection to the limbic system sets it apart from other senses like vision or hearing which are more focused on different types of stimuli (light and sound respectively).

Answer:

The sense of smell is unique because it can detect a wide range of chemical substances and has a direct link to the limbic system, influencing emotional and individual - behavioral responses.