Neuroanatomy

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kidbraindoc
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136582
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Neuroanatomy
Updated:
2012-02-20 22:15:56
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neuroanatomy
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neuroantomy for board review.
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  1. Korsakoff Psychosis
    amnestic disorder where patients have retrograde and anterograde amnesia and tend to confabulate. Usually associated with malnutrition and alcoholism.


    Think of Korsakoff as "Course-askoff" b/c pts will say, "of course I remember" even when they don't
  2. Due to bilateral anterior temporal lobe damage. Symptoms are hyperoral, hypersexual and placid
    Kluver-Bucy Syndrome
  3. Wernicke Disease
    Lesions are here
    due to thiamine deficiency. lesions in the mammillary bodies, medial thalamic nuclei, periaqueductal gray, and pontine tegmentum.
  4. Medial forebrain bundle
    connects the Midbrain, Orbitofrontal region, septal area and hypothalamus which spell MOSH
  5. spinal nerve Dorsal nerve rootlets
    primarily sensory
  6. spinal nerve ventral rootlets
    primarily motor
  7. spinal nerves divide into rami after leaving the intervertebral foramen. the anterior rami supply:
    muscles and skin of the anterolateral body and appendicular muscles and skin
  8. posterior rami supply:
    skin and muscles of the back.
  9. Cutaneous Receptors:

    free nerve endings:

    Paccinian:

    Merkel:

    Meissner:
    pain and temperature


    touch, pressure, vibration


    light touch


    two point discrimination
  10. Dermatomes:

    C5

    C6

    C7

    C8

    T2

    T4

    T10
    shoulder

    thumb

    middle finger

    little finger

    axilla

    nipple

    umbilicus
  11. Dermatomes:

    L2:

    L3:

    L5:

    S1:

    S2:

    S3/4/5:
    anterior thigh

    knee

    great toe

    small toe, sole

    posterior thigh

    perianal, genitals
  12. Anterior Pituitary Hormones:
    ACTH, FSH, GH, LH, prolactin, TSH
  13. Posterior pituitary releases
    oxytocin and vasopressin, produced in the hypothalamus
  14. area of the cord most vulnerable to ischemia
    mid-thoracic cord
  15. where the lumbar cistern ends
    S2
  16. where the conus medullaris terminates in adults
    L1
  17. Where conus medullaris terminates in newborns
    L3
  18. where the dorsal spinocerebellar tract arises
    C8-L3 (Clarks column)
  19. Sympathetic innervation of the eye
    C8-T2 (ciliospinal center of budge)
  20. Sympathetic innervation of the body
    T1-L2 (intermediolateral cell column)
  21. gives rise to the sacral outflow of the parasympathetic nervous system
    S2-S4 (intermediolateral cell column)
  22. blood supply to the cord:
    anterior spinal artery (arises fro the vertebral arteries) supplies the anterior 2/3 of the cord.

    radicular arteries arise from local arteries help supply the cord

    great radicular artery of Adamkiewicz provides most of the blood supply to the lumbar and sacral cord


    venous return from the cord enters epidural veins (Batson's plexus) which have no valves therefore allowing the spread of infection and cancer into the epidural space.
  23. cuneocerebellar tract
    carries afferent information about movement of the ipsilateral upper extremity and rostral body to the cerebellum
  24. dorsal spinocerebellar tract
    carries unconscious proprioceptive information from the lower limbs and trunk
  25. rostral spinocerebellar tract
    carries unconscious proprioceptive information from the upper limbs and rostral body to the cerebellum
  26. destruction of this nucelus of the thalamus causes amnesia
    mediodorsal
  27. largest thalamic nucleus; involved in visual attention
    pulvinar


    "became the largest thalamic nucleus to attract visual attention)
  28. sensory information from the limbs meets in this nucleus
    VPL, it projects to the postcentral gyrus (Brodmanns 3,2,1)
  29. Circumventricular organs:
    neurohypophysis; organum vasculosum; subcommissural organ; pineal gland; area postrema; median eminence; subfornical organ

    "NO SPAM about fornication"

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