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The Nerver system

Ch15 Section1

TermDefinition
Stimulues A change or signal in an organism's surroundings that causes the organism to react.
Response An action or change in behavior that occurs in reaction to a stimulues.
Neuron A cell that carries information through the nervous system.
Nerve Impulse A 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 impluses 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 stimules into 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 another structure.
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