sem 2 neuroclin 1

Card Set Information

Author:
sweetlu
ID:
128753
Filename:
sem 2 neuroclin 1
Updated:
2012-02-19 18:30:09
Tags:
sem neuroclin
Folders:

Description:
sem 2 neuroclin 1
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user sweetlu on FreezingBlue Flashcards. What would you like to do?


  1. biceps reflex
    • - C5
    • - monosynaptic
  2. brachioradialis reflex
    • -C6
    • - monosynaptic
  3. triceps reflex
    • -C7
    • -monosynaptic
  4. patellar reflex
    • - L4
    • - monosynaptic
  5. achilles reflex
    • -S1
    • -monosynaptic
  6. alpha MN
    - innervate EXTRAfusal muscle fibers
  7. gamma MN
    • - innervate INTRAfusal muscle fibers
    • - regulates sensitivity of muscle spindle so sensitivity can be maintained throughout contraction
    • - under supraspinal control
    • - can regulate muscle tone
  8. 1a
    - sensory axons in muscle spindles of proprioception
  9. 1b
    - sensory axons of proprioception in golgi tendon organs
  10. myotactic reflex
    • -1a sensory neuron synapses directly on alpha MN in spinal cord (monosynaptic)
    • -accompanied by reciprocal inhibition of anatgonist muscles (poly synaptic)
    • -aka deep tendon reflex, stretch reflex
  11. golgi tendon reflex
    • -1b sensory neuron synapses on interneuron in spinal cord which INHIBITS alpha MN
    • - responds to muscle tension to prevent tears by inhibition of alpha MN
    • - inhibitors polysynaptic
  12. withdrawl reflex
    • -polysynaptic, excitatory tht involves many levels of the spinal cord
    • -C or 1 delta axonal input
    • - withdrawl response from nociceptive stimuli
    • - crossed extensor reflex often accompanies
  13. crossed extensor reflex
    • - often in combo with withdrawl reflex
    • - complex, polysynaptic
    • - activation of extensor muscles and inhibition of flexors on opposite side of nociceptive stimuli
    • - upper and lower limbs exhibit
    • - "step on a nail, nail leg withdrawls, non-nail leg stiffens to take on extra load
  14. axon reflex
    • - NO SYNAPSES, TRAVELS AWAY FROM SPINAL CORD (antidromically)
    • - thought to spread vasodilation
  15. clonus
    • -series of involuntary muscular contractions due to sudden stratching
    • - result of UMN lesions
  16. thalamus blood supply
    -PCA and posterior choroidal branches from the PCA
  17. UMN's of the corticobulbar tracts innervate bilaterally with the exception of what
    • -CN VII (ventral cell group)- supply muscles of the lower quadrant of the face
    • -CNXII- genioglossus muscle
    • -CN XI- trapezius and SCM
  18. medial reticulaspinal tract
    • - origin-pons
    • -decussation- none
    • -termination- lamina 8
    • - function- action on gamma MN, increase muscle tone and enhance antigravity reflexes
  19. rubrospinal tract
    • -origin: red nucleus of midbrain
    • - decussation: midbrain
    • - terminate- lamina V-VIII (cervical cord)
    • - innervate flexor muscles (functionally parallel to CST)
  20. Lateral vestibulospinal tract
    • origin: LV nucleus of medulla
    • decussation: none
    • terminate: lamina VII and VIII
    • function: alpha and gamma MN that innervate extensor muscles, maintain posture, modulated by Cb
  21. occlusion of PICA/vertebral artery affects
    • - inferior Cb peduncle
    • - ST tract
    • - sympathestic fibers
    • - nucleus ambiguous
    • -nucleus solitarius
  22. occlusion of AICA affects
    • - middle Cb peduncle
    • -vestibular nuclei
    • -spinal V nucleus and tract
    • -ST tract
    • - descending sympathetic fibers
  23. superior Cb artery occlusion affects
    - superior Cb peduncle and Cb
  24. CN at risk for damage in infection of carotid sinus
    -CN III, IV and V (V1, V2, V3)
  25. ACA and MCA occlusion
    • - proximal arm and leg weakness
    • - often include trunk and proximal limbs
  26. MCA and PCA occlusion
    problems with visual processing
  27. spinocerebellar overview
    • - afferents from muscle spindles/joint receptors
    • -enter ant. Cb as mossy fibers via peduncles
    • -corollary motor fibers also enter from rubrospinal tract
    • -DCN computes and decides
    • - globoform and emboliform nuclei send modify signal to reticulospinal and rubospinal tracts for motor output (signal does not enter cortex)
  28. pontocerebellar overview
    • -afferent sensory from cortex(world) and corollary motor (intention) also enters posterior lobe of Cb
    • - DCN computes
    • - dentate sends info to VL to cortex to modulate corticospinal= precesion and sequence
  29. vestibuloCb overview
    • -afferent from vestibular apparatus enter flocculonodular lobe
    • - DCN computes
    • - Fastigial nucleus sends modulation to change position of eye and trunk in response to head movement
  30. strabismus
    - medial deviation of an eye
  31. visual p/w
    -optic nerve-tract-chiasm-LGN-redaition- visual cortex (17) in occipital lobe
  32. fusiform gyrus
    • - part of the medial temporo occipital lobe associated with face recognition
    • - damage results in posopagnosia- inability to recognize faces
  33. Extrastriate area of the association visual cortex
    - M ganglion in the parietal lobe= 'where p/w'

    - P ganglion in the temporal lobe= 'what p/w'
  34. circadian rhythm p/w
    -retinol ganglion cells- SCN- paraventricular nucleus- spinal cord- sympathetic trunk- superior cervical ganglion- pineal gland
  35. N1 sleep
    • -alpha (eyes closed) to theta (N1)
    • - loss of most muscle tone and awareness of external environment
    • - myoclonus and hypnogonic hallucinations
  36. N2 sleep
    • - K-complexes and sleep spindles
    • -occupies most (45-55%) of total sleep in adults
    • - total loss of awareness of external environment
  37. N3
    • - delta wave (min 20%)
    • - may have night terrors, bed wetting, sleep walking and sleep talking
  38. REM
    • - Beta wave sleep (beta waves also seen during awake)
    • - muscular atonia and dreaming
    • -20-25% total sleep
  39. Argyll robertson pupil
    • - small irregular pupil that does not constrict to light, but does for accomodation
    • - commonly caused by neurosyphilis
  40. marcus gunn pupil
    • light in affected eye will not cause constriction in either eye
    • - afferent CN III disfunction
    • - light in unaffected eye will cause constriction in both
  41. Adies pupil
    • - aka "tonic pupil"
    • - caused by degeneration of the ciliary ggl and postganglionic parasympathetic fibers
    • - light reaction shows prolonged and sluggish constriction
    • - near reaction occurs, but pupil remainns constricted and dilates slowly

What would you like to do?

Home > Flashcards > Print Preview