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NEUROTRANSMISSION Mr. Meehan 10th Grade Health Quick Review 5 factors that influence teens choices about drugs? 4 classifications of drugs? Nervous System Structure Two Systems Central Nervous System – Composed of your brain and spinal cord. Peripheral Nervous System – Composed of nerve branches arising from the brain and spinal cord Nervous System Function The nervous system is a network of specialized cells, which coordinate the actions of an individual by sending signals from one part of the body to the other. Vocabulary Neurons – a nerve cell that transmit information throughout the body via the nervous system. Synapse - is a small gap or junction between two neurons. Neurotransmitters – chemical messengers that carry messages across the synapse. Neurons How Neurons Communicate Neurotransmission – transfer of information between neurons. Video: How Neurons Communicate Process of Neurotransmission 1. 2. 3. 4. 5. Brain generates an electrical impulse or action potential Action potential signals neurotransmitters to move toward axon terminals Neurotransmitters are released into synapse Neurotransmitters bind to receptors on the dendrites Process is repeated. How Neurons Communicate How Neurons Communicate Neurotransmitters – what are they again???? Chemical messengers that carry messages across the synapse. They either excite or inhibit neurons Examples of neurotransmitters include Dopamine Serotonin Norepinephrine How Neurons Communicate Dopamine Controls voluntary movements of the body and is associated with the reward mechanism of the brain. Regulates the pleasurable emotions Serotonin Inhibitory neurotransmitter which has been found to have a significant effect on emotion, mood and anxiety Norepinephrine Excitatory neurotransmitter and it regulates mood and both physical and mental arousal How do drugs interact with our Nervous system? Mouse Party How Role Play We are going to role play and simulate how cocaine effects your nervous system.