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5 Written questions

5 Matching questions

  1. repolarization
  2. types of neuroglia & location
  3. excitability
  4. interneurons
  5. what are examples of excitatory transmission?
  1. a CNS=astrocytes, ependymal cells, microglia, oligodendrocytes; PNS=Schwann cells, satellite cells
  2. b in CNS, form connecting link between afferent & efferent
  3. c membrane is impermeable to Na+ but permeable to K+ and it rushes outside the cell down the concentration gradient, which restores the resting membrane potential to -70 mV
  4. d ability to respond to stimulus
  5. e Ach, norepinephrine, epinephrine, dopamine

5 Multiple choice questions

  1. sequence of depolarization, reverses polarization, and re-polarization
  2. for myelin sheaths around larger nerve fibers in PNS; vital to neuronal regeneration, promote repair
  3. axon plasma membrane=axolemma; surrounded by a myelin sheath, a wrapping of lipid which protects the axon and electrically isolates it, increases rate of AP
  4. from one end of a neuron to the other (electrically, via APs); across the minute space separating one neuron from another (chemically, via NTs)
  5. K+ channels open, hyper-polarizes membrane and it's more difficult for AP to occur

5 True/False questions

  1. resting membrane potentialactive transport pump=to maintain homeostasis; resting=difference between inside & outside (-70 mV)

          

  2. reflex arcfunctional unit of nervous system; allows impulses to travel in one direction; automatic, involuntary

          

  3. nervous tissue is highly______presynaptic=1st; post-synaptic=2nd

          

  4. Satellite cellsfor myelin sheaths around larger nerve fibers in PNS; vital to neuronal regeneration, promote repair

          

  5. how many spinal nerves in the PNS? what do they do?31; carry info to and from spinal cord