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Science Vocabulary

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Term
Definition
Response   A reaction to something  
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Homeostasis   Regulation of an organismĀ“s internal, life-maintaining  
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Neuron   Basic functioning unit of the nervous system, made up of a cell body, dendrites, and axons  
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Dendrite   Neuron structure that receives messages and sends them to the cell body  
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Axon   Neuron structure that carries messages away from the cell body  
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Synapse   Small space across which an impulse moves from an axon to the dendrites or cell body of another neuron  
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Central Nervous System   Division of the nervous system, made up of the brain and spinal cord  
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Peripheral Nervous System   Division of the nervous system, made up of all the nerves outside the Central Nervous System (CNS); connects the brain and spinal cord to other body parts  
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Cerebrum   Largest part of the brain, where memory is stored, movements are controlled, and impulses from the senses are interpreted  
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Cerebellum   Part of the brain that controls voluntary muscle movements, maintains muscle tone, and helps maintain balance  
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Brain Stem   Connects the brain to the spinal cord and is made up of the midbrain, the pons, and the medulla  
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Reflex   Automatic, involuntary response to a stimulus; controlled by the spinal cord  
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