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5 Written Questions

5 Matching Questions

  1. Schwann Cells
  2. Compound nerve action potential
  3. larger the nerve the faster the conduction velocity, myelinated nerves are faster than unmyelinated nerves
  4. Threshold Stimulus
  5. Satellite Cells
  1. a The cumulation of action potential of all neurons in a nerve
  2. b What is the relationship between myelination and size and conduction velocity?
  3. c the PNS glial cell that forms myelin
  4. d the PNS glial cell that surrounds the dorsal root ganglion neurons
  5. e The amt of stimulus needed to create an action potential. NA+ rushes into the cell increasing the number of positive ions inside the cell and changing the membrane polarity

5 Multiple Choice Questions

  1. a chemical released at the distal end of an axon that stimulates an adjacent cell; found in the synaptic vesicles of the axon terminal; initiates electrical current from one neuron to the next by diffusing across the synaptic cleft
  2. insulates the nerve fibers
  3. carry signals toward the CNS from the body periphery; sensory neurons
  4. the brain and spinal cord collectively
  5. What period is it when the sodium ion channels are open, the membrane is totally insensitive to additional stimuli, regardless of the force of the stimulus?

5 True/False Questions

  1. Resting membrane potentialThe cumulation of action potential of all neurons in a nerve


  2. Nervea cordlike organ of the PNS composed of multiple nerve fibers ensheathed in connective tissue


  3. Efferent Neurona neuron that conducts impulses away form the CNS to muscles and glands; motor neurons


  4. Neurogliaspecialized supporting cells in the CNS


  5. OligodendrocytesForm the myelin in the brain and spinal cord


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