Nervous System Vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| neuron | individual cells in the nervous system that receive, integrate, and transmit information
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| axon | the long, narrow process that projects from the cell body
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| dendrite | the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body
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| synapse | The gaps between adjacent neurons across which chemical signals are transmitted.
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| neurotransmitter | Neurotransmitters molecules that are released from active neurons and influence the activity of other cells
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| sensory neuron | transmit information from eyes and other sensors that detect external stimuli
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| motor neuron | neurons that transmit signals to muscle cells
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| interneurons | that form the local circuits connecting neurons in the brain
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| central nervous system | consists of the brain and the spinal cord
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| peripheral nervous system | the nervous system outside the brain and spinal cord
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| membrane potential | voltage across a membrane. ranges from -50 to -200 millivolts. inside of cell negative compared to the outside
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| action potential | action potential a massive change in membrane voltage
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| synaptic cleft | the small gap between the neurons
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