Neuro Limbic 54.txt

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kepling
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83784
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Neuro Limbic 54.txt
Updated:
2011-05-04 17:35:58
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Neuro Limbic
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Neuro Limbic 54
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  1. how many layers of cortex in hippocampus?
    3
  2. three hippocampal cortex layers?
    • polymorphic
    • pyramidal
    • molecular
  3. three dentate gyrus cortex layers?
    • Polymorphic
    • granular
    • molecular
  4. Hippocampal formation afferent pathway?
    Perforant
  5. Hippocampal formation efferent pathway?
    Fornix (Fimbria)
  6. Hippocampal afferent signal flow?
    • Perforant pathway
    • Dentate gyrus
    • Hippocampal proper
    • Alveus, fimbria, fornix
  7. Papez circuit function?
    Convert short-term to long-term memory
  8. Papez circuit pathway?
    • Hippocampus
    • Alveus
    • Fimbria
    • fornix
    • Mammillary nucleus
    • Mammillothalamic tract
    • Anterior thalamic nucleus
    • Cingulate gyrus
    • Entorhinal cortex (parahippocampal gyrus)
    • Perforant pathway
    • Hippocampus
  9. Korsakoff syndrome?
    • Can't convert short to long-term memory
    • * thaimine deficiency to hippo., fornix, mammillary nucleus, dorsomedial thalamus
  10. Wernicke/Korsakoff syndrome?
    • Same as Korsakoff but with Alcoholcs
    • * Add gaze palsies and ataxia due to cerebellum
  11. amygdaloid complex 2 parts?
    • Corticomedial (w/ central nucleus)
    • Basolateral
  12. Oakley Syndrome?
    • bilateral lesion of amydgala
    • lack of fearful expression
  13. Hippocampus/Amygdala blood supply?
    Anterior choiroidal artery off of ICA
  14. Septal nuclei function?
    Calm, placid behavior
  15. Nucleus Accumbens function?
    • reward and addiction
    • * Opiate and dopamine receptors
    • * Receives dopamine from ventral tegmental area
  16. Ventral tegmental area function?
    Dopamine to hypothalamus, septal nuclei and nucleus accumbens
  17. Three reticular formation nuclei?
    • Lateral
    • Medial
    • Midline (raphe nuclei)
  18. recitular formation nucleus size comparisons?
    • Lateral = small
    • Medial = large
  19. RAS pathway?
    • Ascending pain via SC
    • Reticular formation
    • Intralaminar thalamic nucleu
    • diffuse cortex activation
  20. RAS function when active?
    EEG change from asleep to awake
  21. What does the medial portion of the recitular formation form?
    Reticulospinal tract: Medial (pontine) and lateral (Medullary)
  22. Pontine and Medullary reticulospinal tract functions?
    • Pontine: Activate extensors
    • Medullary: Inactive extensors
    • * Sympathetic: Lateral horn in thoracic level
    • * Parasympathetic: Sacral spinal cord
  23. three limbic lobe parts?
    • Cingulate gyrus
    • Isthmus of cingulate gyrus
    • parahippocampal gyrus
  24. Parahippocampal gyrus parts?
    • 1) Piriform (Anterior)
    • 2) Entorhinal (Posterior): part of Papez circuit (short to long-term memory)
  25. T/F: Uncus is part of entorhinal portion of Parahippocampal gyrus?
    F: Uncus is part of Piriform portion (anterior)
  26. what is deep to the Uncus?
    Amygdala

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