1.  What are the functions of the nervous system?  What is a neuron?  Summarize the path of a nerve impulse.  Form a hypothesis – will you be able to react more quickly using your eyes or your ears?

2.  Functions: 1. Receive information from both inside and outside the body. 2. Direct body responses. 3. Maintain homeostasis.

3. neuron – cells that carry information through your nervous system nerve impulse – the “message” that a neuron (nerve cell) carries.

4.  Parts of a neuron: 1. cell body – the part of the neuron that contains the nucleus. 2. dendrites – thread-like extensions that RECEIVE the nerve impulse. 3. axon – structure that carries the nerve impulse AWAY from the neuron. 4. synapse – the gap between one neuron and another.

5. cell body dendrites axon