Terms Referring to Parts of the Nervous System (Neuro 102)

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9 Terms

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Lamina

A row or layer of cell bodies separated from other cell bodies by a layer of axons and dendrites

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Column

A set of cells perpendicular to the surface of the cortex, with similar properties

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Tract

A set of axons within the CNS, also known as a projection. If axons extend from cell bodies in structure A to synapses onto B, we say that the fibers “project” from A onto B.

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Nerve

A set of axons in the periphery, either from the CNS to a muscle or gland or from a sensory organ to the CNS

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Nucleus

A cluster of neuron cell bodies within the CNS

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Ganglion

A cluster of neuron cell bodies, usually outside the CNS (as in the sympathetic nervous system)

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Gyrus

A protuberance on the surface of the brain

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Sulcus

A fold or groove that separates one gyrus from another

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Fissure

A long, deep sulcus