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5 Written questions

5 Matching questions

  1. sensory neurons
  2. neurons in the synaptic cleft
  3. ependymal cells
  4. reverse polarization
  5. neurons need to be able to conduct info in 2 ways:
  1. a from one end of a neuron to the other (electrically, via APs); across the minute space separating one neuron from another (chemically, via NTs)
  2. b carry impulse from peripheral receptors to CNS
  3. c presynaptic=1st; post-synaptic=2nd
  4. d line ventricles of brain & central canal of spinal cord; some are ciliated which facilitate movement of cerebrospinal fluid
  5. e influx of Na+ reverses membrane polarity w/ more positive charges inside cell than outside

5 Multiple choice questions

  1. rush of positively charged Na+ into cell, driven by concentration gradient & electrical gradient; inside of cell becomes more positive
  2. a Na+ channel CAN'T be stimulated during the time between the opening of the Na+ channel activation gate & the opening of the inactivation gate; Na+ channel can't be involved in another AP till inactivation gate is reset="recovery"
  3. 31; carry info to and from spinal cord
  4. surround clusters of neuronal cell bodies in PNS-unknown function
  5. motor output (effectors=response); the activation of muscles or glands (typically via release of NTs)

5 True/False questions

  1. continuous conductionoccurs in unmyelinated axons; wave of depolarization & repolarization travels from one membrane patch to the next--like dominoes falling


  2. what's the fastest way of conduction? (2 parts)myelinated, axon w/ largest diameter


  3. divisions of PNSsensory, interneurons, motor


  4. conductivityability to respond to stimulus


  5. what are examples of inhibitory transmission?serotonin, GABA, endorphins & enkephalins


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