| Type | Responds to | Some Locations |
|---|---|---|
| Chemoreceptor | Chemicals | Mouth, nose, blood vessels |
| Photoreceptor | Light | Eyes |
| Mechanoreceptor | Touch, pressure, vibrations, and stretch | Skin, hair follicles, ears, ligaments, tendons |
| Thermoreceptor | Temperature changes | Skin, hypothalamus |
| Pain receptor | Tissue injury | Throughout the body |