exam 4 take home2008 - Exam Name_ MULTIPLE CHOICE. Choose...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Note that the answer blanks are to the RIGHT of the question. 1)
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The portion of the nervous system that is associated with the control of involuntar y activities is the
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1)
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_______ A)
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autonomic nervous system. B)
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somatic nervous system. C)
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peripheral nervous system. D)
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central nervous system. E)
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automatic nervous system. 2)
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The resting potential of a particular nerve cell is -66 mV. Depolariz ation of the membran e will shift the membran e potential toward
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2) ______ _ A ) - 6 6 m V.
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-90 mV. D)
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not enough information to tell. E)
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0 mV. 3)
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Of all of the ions associated with generatin g the resting membran e potential, the permeabil ity to the membran e to ________ is the most important.
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3) ______ _ A ) c h l o rid e io ns
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sodium ions D)
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all of the above E)
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none of the above Base your answers to the following question(s) on the graph below, depicting an action potential. 4)
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In the graph above, the point at which the potassium channels open is indicated by the letter
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4) ______ _ A )
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A.
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B)
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B.
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C)
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C.
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D)
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D.
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E) E .
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Based on the graph above, the threshold voltage appears to be approxim ately
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exam 4 take home2008 - Exam Name_ MULTIPLE CHOICE. Choose...

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