Nervous System 1

Time during an action period when another action potential cannot be generated because the voltage-gated Na+ channel is inactivated

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Change in voltage of a cell membrane in response to a stimulus that results in transmission of an electrical signal; unique to neurons and muscle fibers

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Part of the voltage-gated Na+ channel that opens when the membrane voltages

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Glial cell type of the CNS that provides support for neurons and maintains the blood-brain barrier

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The functional division of the nervous system that is responsible for homeostatic reflexes that coordinate control of cardiac and smooth muscle, as well as glandular tissue

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Single process of the neuron that carries an electrical signal (action potential) away from the cell body toward a target cell

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Tapering of the neuron cell body that gives rise to the axon

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Single stretch of the axon insulated by myelin and bounded by nodes of Ranvier at either end (except for the first, which is after the initial segment, and the last, which is followed by the axon terminal)

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End of the axon, where there are usually several branches extending toward the target cell

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Cytoplasm of an axon, which is different in composition than the cytoplasm of the neuronal cell body

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