Relier Pairs Nervous SystemVersion en ligne fives par Jocelyn Ochoa 1 the in between sensory and motor neurons. 2 chemicals in junction to allow impulses to be started in a second neuron 3 A small gap or space between the axon of one neuron and the dendrite of another 4 brings senses changes messages to CNS 5 two main anatomical divisions of the nervous system 6 Primary cell of the nervous system that transmits impulses 7 carry messages from cns. Instructs the body to do something.