What is meant by dorsal roots?

Dorsal Roots: The dorsal roots are a portion of the spinal cord that accept sensory information that will travel up your spinal cord to be perceived in your brain. Receptors sense, and the brain perceives. The spinal cord is part of your central nervous system and carries afferent sensory information though the dorsal columns and dorsal roots and transmits afferent motor information to move your muscles front.