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11 Cards in this Set
- Front
- Back
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Nervous system
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Send and receive information through the body (communication)
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Three parts of nervous system
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Brain , spinal cord , and neurons
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Brain
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To interpret information and the decide how to respond.
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Spinal cord
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Like a two lane highway, the spinal cord sends messages between the brain and the body.
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Neurons
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Cells responsible for carrying in your body. mess
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Stimulus
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Change in the environment ( internal or external) that is detected by a receptor neuron.
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Threshold
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The minimum level needed to be detected.
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Response
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Reaction to a stimulus.
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Voluntary
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Something that you think about.
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Involuntary
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Something that you don't think about.
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Reflex
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A rapid, involuntary response that does not rely on the brain.
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