Figure 44.14 A Neural Network in the Spinal Cord Generates the Knee-Jerk Reflex Sensory (afferent) information enters the spinal cord through the dorsal horns, and motor (efferent) output leaves it via the ventral horns. Information travels to the brain in white matter tracts. Interneurons make connections within the spinal cord that result in a complex, coordinated behavior pattern.