1. What kind of cell performs the major function of the nervous system?

Fill in the blanks: ________ are the cells of nervous tissue that send and receive messages, and ________ are the supporting cells of nervous tissue. A(n) ________ carries a nerve impulse toward a neuron cell body, and a(n) ________ carries a nerve impulse away from a neuron cell body.

6. explain how the concept of cell-to-cell communication as it applies to the nervous system.