FIGURE 14.2 Sensory Receptors in the Skin

cooled. The cold receptor is also activated by menthol, whichgives mint its cool taste. The second type, the warm receptor, increases its rate of action potential production as skin temperatureincreases. Both cold and warm receptors respond most strongly tochanges in temperature. Cold receptors are 10 to 15 times more

numerous than warm receptors in any given area of skin. The thirdtype is a pain receptor that is stimulated by extreme cold or heat.At very cold temperatures (0°–12°C), only pain receptors arestimulated. As the temperature increases above 15°C, the painsensation ends. Between 12°C and 35°C, cold fibers are

TABLE 14.2

Sensory Receptors

468