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homeostasis
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maintenance of equilibrium and stability necessary for human life
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nervous system
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system that includes the brain and spinal cord (the central nervous system) and an intricate network of nerves (the peripheral nervous system)
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neurons
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the basic units of the nervous system
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neurotransmission
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the transmission of electrochemical information between neurons
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neurotransmitter
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a chemical messenger that results in action, inaction, or inhibition of a neuron
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parasympathomimetic
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drugs that stimulate or mimic the parasympathetic nervous system (rest and digest)
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sympathomimetics
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drugs that stimulate or mimic the sympathetic nervous system (fight or flight)
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synapse
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the space between two neurons