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
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    ependymal cells
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    schwann cell
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    axon hillock
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    pre-synaptic membrane
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    perineurium
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    blood vessels
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    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
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    lateral sulcus
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    pineal gland
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    mammillary bodies
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    arbor vitae
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    longitudinal fissure
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    cortex
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    deep cerebellar nuclei
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    olfactory tract
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    trochlear nerve
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    Is the indicated cranial nerve sensory only, motor only, or both sensory and motor?
    sensory only
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    Is the indicated cranial nerve sensory only, motor only, or both sensory and motor?
    motor only
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    anterior horn of lateral ventricle
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    periosteal layer of dura mater
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    cavernous sinus
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    lumbar enlargement
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    cauda equina
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    dorsal root ganglion
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    anterior horn
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    orbicularis oculi muscle
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    eyelashes
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    nasolacrimal duct
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    caruncle
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    trochlea
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    superior oblique muscle
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    optic disc
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    scleral venous sinus
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    iris
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    photoreceptor cell layer
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    auricle
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    external acoustic meatus
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    middle ear
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    vestibule
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    maculae
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    What phenomenon does the indicated structure sense?
    sound
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    scala tympani
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    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
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    microglia
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    nucleus
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    vesicle
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    myelin sheath
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    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
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    cerebral aqueduct
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    occipital
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    third ventricle
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    corpus callosum
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    pre-central gyrus
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    vermis
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    hypoglossal nerve
Author:
katydurkin
ID:
53916
Card Set:
ap lab 4
Updated:
2010-12-08 02:09:13
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ap lab 4
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