Fact 1: Some touch receptors sense differences in temperature or pain.

Fact 2: Touch receptors are a type of mechanoreceptor.

Given the two facts above, answer the question "what senses differences in temperature or pain?" with the following options: 
- h2o
 - the body's largest organ
 - dead nerve cells
 - Electric devices
 - heat
 - the skin
 - sensory neurons
 - mechanoreceptors


 

        mechanoreceptors 