1. NEURONS Basic Units of the Nervous System

2. _________________ - A cell that conducts electrochemical signals “COMMUNICATIONS SPECIALIST”

3. STRUCTURE OF A NEURON

4. Dendrites Cell Body Axon Buttons (Terminals) Myelin Sheath and the Nodes of Ranvier PARTS/FUNCTIONS

5. Neurons are held in place by __________ that cleans, nurtures, and supports the neuron. The

6. _________________________ - a chemical substance that is released by a transmitting neuron at the synapse and alters the activity of the receiving neuron. -May excite or inhibit other neurons EXAMPLE: Seeing colors How do Neurons Communicate?

8. NEUROTRANSMISSION

9. 1. SERATONIN: SERATONIN: Affects neurons involving sleep, appetite, and mood 2. DOPAMINE: DOPAMINE: Affects neurons involved in learning, memory, emotion, and response Types of Neurotransmitters

11. Chemical substances in the nervous system that ___________pain & ___________ pleasure. ► Similar to opiate drugs ► Necessary for survival

12. Chemical substances that affect the functioning of other organs 1. MELATONIN: 1. MELATONIN: Regulates the sleep cycle 2. ADRENAL HORMONES: 2. ADRENAL HORMONES: Control emotion & stress 3. ________________: 3. ________________: Stimulate the development of male and female sexual characteristics