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3 functions of nervous systems

sensory input, integration, motor output


brain and spinal cord make up the


sensor and motor nerves make up the


the junction between neurons at which an electrical signal is converted into a chemical signal that can then stimulate another electrical signal


chemical messengers

motor neurons

somatic nervous system, autonomic nervous system

autonomic nervous system

sympathetic (fight or flight), parasympathetic (rest and rumination)

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