"Nerve endings" refer to the tiny parts of our body that can sense and transmit signals to our brain. They help us feel different sensations like touch, pain, pressure, and temperature. Full definition
The temperature - sensitive nerve endings in your skin can detect the difference between your inside body temperature and your outside skin temperature. (joannenova.com.au)
The photons emitted in the light beam penetrate the skin, working on the tissue to stimulate nerve endings, cell growth, and blood flow. (wideopenpets.com)