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15-1 Nervous System


Stimulus A change or signal in an organism's surroundings that cause the organism to react
Response An action or a change in behavior that occurs in results of stimulus
Neuron A cell that carries information through the nervous system
Nerve Impulse The message carried by neurons
Dendrite A thread like extension of a neuron that carries nerve impulses toward the cell body
Axon A thread like extension of a neuron that carries nerve impulses away from the cell body
Nerve A bundle of nerve fibers
Sensory Neuron A nerve cell that picks up stimuli from the internal or external environment and converts each stimulus into a nerve impulse
Motor Neuron A neuron that sends an impulse to a muscle or gland, causing the muscle or gland to react
Interneuron A neuron that carries nerve impulses from one neuron to another
Synapse The junction where one neuron can transfer an impulse to the next structure
Created by: celeste floyd