Comparing Taste, Smell, and Touch
Check your understanding of taste, smell, and touch by comparing these sensory systems on the dimensions listed in the first column below. A few answers are supplied; see whether you can fill in the rest.
| Dimension | Taste | Smell | Touch |
| 1. Stimulus | Volatile chemicals in air | ||
| 2. Number of types of receptors | Many (at least 6) types | ||
| 3. Location of receptors | Upper areas of nasal passages | ||
| 4. Basic elements of perception | Sweet, sour, salty, bitter |