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LCE SCIENCE

Ch 6 : The Nervous System Sec 1 : How the Nervous System Works

TermDefinition
stimulus any change or signal in the environment that can make an organism react in some way
response what the body does in reaction to a stimulus
neuron a cell that carries information through the nervous system
nerve impulse the message carried by a neuron
dendrite a threadlike extension of a neuron that carries nerve impulses TOWARD the cell body
axon a threadlike extension of a neuron that carries nerve impulses AWAY from the cell body
nerve a bundle of nerve fibers
sensory neuron a neuron that picks up stimuli from the internal or external environment and converts each stimulus into a nerve impulse
interneuron a neuron that carries nerve impulses from one neuron to another
motor neuron a neuron that sends an impulse to a muscle or gland, causing the muscle or gland to react
synapse the junction where one neuron can transfer an impulse to the next structure
Created by: LCEclass
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