A and P Chap 14 type of white matter

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6 Terms

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where is white matter found

in the cerebrum

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What is white matter?

bundles of myelinated axons located within the CNS

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What are the three types of white matter tracts?

  1. Association tracts

  2. Commissural tracts

  3. Projection tracts

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What is an association tract?

  • Connects and transports signals between gyri of the same hemisphere

  • arcuate fibers and longitudinal fasciculi

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What is a commissural tract

  • connects and transmits signals from a gyrus on one hemisphere to the corresponding gyrus on the other hemisphere

  • corpus callosum and anterior commissure

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What is a projection tract?

  • Link between cerebral cortex to the diencephalon, brain stem, cerebellum, and spinal cord.

  • projection fibers of the internal capsule