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

Fact 2: If the skin is painful, seek medical attention.

Given the two facts above, answer the question "What senses differences when you hurt your skin?" with the following options: 
- touch receptors
 - sensory neurons
 - eyes
 - Veins and arteries.
 - matter vibrating
 - light receptors
 - smell
 - an organism's body


 

 touch receptors        