1. Nervous System communication and coordination network throughout the animal’s body Neuron – nerve cell specialized for carrying signals from one part of the body to another Nerve – communication line made from bundles of neuron fibers wrapped in connective tissue

2. Divisions of the Nervous System CNS – central nervous system Brain and spinal cord PNS – peripheral nervous system Nerves that carry impulses in and out of the CNS

3. 3 functions of the N.S. 1.Sensory input – sensory neurons carrying impulses from sense organs to CNS 2. Integration – interneurons (found only in the CNS) interpreting the sensory signals and creating a response

4. 3.Motor output – motor neurons conducting signals from integration to effector cells (muscle cells) *(effector cells perform body’s responses)

5. NEURONS