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jen baiocco

on 14 April 2010

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Transcript of Nerves

Nervous system What structures comprise this system? brain
spinal cord
sense organs What is the function of the nervous system? control & coordinate body functions
respond to stimuli nucleus dendrites nodes myelin sheath cell body axon axon terminals neurons are nerve cells that transmit impulses An impulse is an electrical message cell body- contains the nucleus dendrites-
receives impulse axon-
carries impulse away from cell body fatty protective covering that speeds up nerve impulse

myelin axon terminal-
ends of axon synapse-
space between two neurons Once an impulse crosses the synapse, neurotransmitters disintegrate or get recycled What are the effects of drugs?
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