Ch 12 - CNS (vocab)

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Author:
KellyM
ID:
212563
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Ch 12 - CNS (vocab)
Updated:
2013-04-09 23:26:57
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vocab
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vocab
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  1. cephalization
    • evolutionary development towards a centralization of neural and sensory organs in the head/anterior (rostral) region of the body
    • increased number of neurons in head
    • highest level reached in human brain
  2. cerebral cortex
    • 40% mass of brain
    • site of conscious mind: awareness, sensory perception, voluntary motor initiation, communication, memory storage, understanding
    • thin (2-4 mm) superficial layer of gray matter
  3. association fibers
    horizontal; connect different parts of same hemisphere
  4. commissural fibers
    horizontal; connect gray matter of 2 hemispheres
  5. projection fibers
    vertical; connect hemispheres with lower brain or spinal cord
  6. diencephalon
    • 3 paired structures: thalamus - hypothalamus - epithalamus
    • encloses third ventricle
  7. arbor vitae
    treelike pattern of cerebellar white matter

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