ap lab 4

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katydurkin
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53916
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ap lab 4
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2010-12-07 21:09:13
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ap lab 4
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  1. What do we call neuronal processes that transmit membrane potentials away from the neuronal cell body?
    axons
  2. What is the functional classification for neurons that carry information from peripheral receptors to the central nervous system?
    sensory
  3. What type of glial cell is responsible for supporting neurons and maintaining the blood/brain barrier?
    astrocytes
  4. ependymal cells
  5. schwann cell
  6. axon hillock
  7. pre-synaptic membrane
  8. perineurium
  9. blood vessels









  10. Which labeled portion of the diagram corresponds to the hyperpolarization of the axon?
    D
  11. What do we call the period during which initiation of an action potential requires a higher than normal threshold stimulus?
    relative refractory period
  12. Hyperpolarization is the result of the excessive exit of which ion from the cell?
    potassium
  13. In the PhysioEx exercise, what was the effect of ether on the nerve?
    inhibition
  14. lateral sulcus
  15. pineal gland
  16. mammillary bodies
  17. arbor vitae
  18. longitudinal fissure
  19. cortex
  20. deep cerebellar nuclei
  21. olfactory tract
  22. trochlear nerve

  23. Is the indicated cranial nerve sensory only, motor only, or both sensory and motor?
    sensory only

  24. Is the indicated cranial nerve sensory only, motor only, or both sensory and motor?
    motor only
  25. anterior horn of lateral ventricle
  26. periosteal layer of dura mater
  27. cavernous sinus
  28. lumbar enlargement
  29. cauda equina
  30. dorsal root ganglion
  31. anterior horn
  32. orbicularis oculi muscle
  33. eyelashes
  34. nasolacrimal duct
  35. caruncle
  36. trochlea
  37. superior oblique muscle
  38. optic disc
  39. scleral venous sinus
  40. iris
  41. photoreceptor cell layer
  42. auricle
  43. external acoustic meatus
  44. middle ear
  45. vestibule
  46. maculae

  47. What phenomenon does the indicated structure sense?
    sound
  48. scala tympani
  49. scala vestibuli
  50. What fluid fills the scala tympani?
    perilymph
  51. What are clusters of neuronal cell bodies in the central nervous system called?
    nuclei
  52. What type of glial cell is responsible for producing and circulating cerebrospinal fluid?
    ependymal cells
  53. microglia
  54. nucleus
  55. vesicle
  56. myelin sheath
  57. axon
  58. What do we call the period during which an action potential cannot be initiated, regardless of the strength of the stimulus?
    absolute refractory period
  59. Depolarization is the result of the rapid entry of which ion into the cell?
    sodium
  60. In the PhysioEx exercise, what was the effect of curare on the nerve?
    no effect
  61. cerebral aqueduct
  62. occipital
  63. third ventricle
  64. corpus callosum
  65. pre-central gyrus
  66. vermis
  67. hypoglossal nerve

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