What part of a nerve cell carries signals toward the

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7) What part of a nerve cell carries signals toward the part of the cell that houses the nucleus?  A) node of Ranvier  B) axon  C) cell body  D) dendrite  E) neuron  Answer:  D  Topic:  28.2  Skill:  Conceptual Understanding 8) The speed of impulse conduction along an axon may be increased by  2
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Topic:  28.2  Skill:  Factual Recall 9) Multiple sclerosis results from an immune system disorder that primarily involves  Topic:  28.2  Skill:  Factual Recall 10) Which of the following statements about resting potential is  true Topic:  28.3  Skill:  Conceptual Understanding  11) Once an action potential is triggered, the first major chemical change is  A) a reversal of the membrane polarity, with the interior of the cell becoming positively charged.  B) a reversal of the membrane polarity, with the interior of the cell becoming negatively charged.  C) an increase in the negative charges inside the neuron.  D) a sudden rush of potassium into the neuron.  E) a sudden impermeability of the membrane to the transport of ions.  Answer:  A  Topic:  28.4  Skill:  Conceptual Understanding 12) Once the threshold potential is reached,  Topic:  28.4  Skill:  Conceptual Understanding
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  • Spring '08
  • FRANCE
  • Biology, Factual Recall

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