Which part of the brain acts as a relay station for incoming sensory information?

The part of the autonomic nervous system known as the 'eat-drink-and-rest' system is the

The neurons that carry messages from the spinal cord to the muscles and glands are the

The sympathetic division of the nervous system could be called the

Melissa is walking around barefoot and steps on a sharp nail. She feels the pain and immediately pulls her foot off the ground away from the nail. Which neurons were involved in her response?