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19 Cards in this Set

  • Front
  • Back
groups of axons are called
fibers
bundles
tracts
pathways
fasciculi
columns
lemnisci
capsules
nerves
brachia
peduncles
major sensory and motor pathways (4) - connect peripheral organ with CNS
- somatosensory
- visual
- auditory
- motor
major intracranial pathway (3)
1) comissures: 2 hemispher
2) association fibers: corticals areasin same hemi
3) projection : connect cortex with all other areas of brain
commisure
1 corpus callosum
2 anterior and posterior commissures
association fiber
1 long association fiber
- superior longitudinal fasciculus
- arcuate fasciculus
- inferior longitudinal fasciculus
- uncinate fasciculus
2 short association fiber
superior longitudinal fasciculus
connect frontal, parietal, occipitallobes
arcuate fasciculus
connect language areas in dominate (left) hemisphere (area39,40,44,45,22)
area 39
angular gyrus (reading)
area 40
supermarginal gyrus (reading)
area 44,45
broca
area 22
wernike
conduction ahasia (cuase by lesions of arcuate fasciculus)
inapp response to questions, impair repetition, diff relating input to output
inferior longitudinal fasciculus
connect occipital and temoralloes
uncinate fasciculus
connect temporal pole, inferior frontal, motor speech areas
short association
connect adjacent gyri in nrighnoring regions of cortex / run beneath gray matter
projection fiber
internal capsule
externalcapsule
extreme capsule
vertical projection fibers radiate outwardfrom the middle in a fan likepattern
corona radiata
capsule
vertical pathways connect cortex with other areasof brain
internal capsule
- most important
- all msjor motor and sensory tract run thru
- major site of CVAs involving hemorrphage of MCA