The Nervous System Answers

On a hot summer afternoon, your sensory neurons detect heat; in a few moments, you begin to sweat. The pathway is being used to turn on the sweat glands.

A child is calmed by having his back rubbed before he goes to sleep. The soothing touch is sent along the pathway.

In reaction to the video game you are playing, your brain sends instructions to your fingers to press the correct buttons. The pathway is being used.