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5 Written questions

5 Matching questions

  1. depolorization, repolarization, and hyperpolarization
  2. functions of the CNS
  3. axon
  4. interneurons
  5. axon hillock
  1. a -'switch' - if info is strong enough, switch is turned on
  2. b
  3. c functions are to process and coordinate:
    -sensory data: from inside and outside body
    -motor commands: control activities of peripheral organs (e.g. skeletal muscles)
    -higher functions of brain: intelligence, memory, learning, emotion
  4. d -cells that provide brain power
    -most located in brain, spinal cord, autonomic ganglia
    -between sensory and motor neurons
  5. e carries electrical signal (action potential) to target

5 Multiple choice questions

  1. neuroplasm
  2. also, local potentials

    -changes in transmembrane potential that cannot spread far from site of stimulation
    -any stimulus that opens a gated channel; produces a graded potential
  3. -migrate through neural tissue
    -clean up cellular debri, waste products, and pathogens
  4. -controls skeletal muscle contractions
  5. -myelinated
    -large diameter
    -high speed
    -carry rapid information to/from CNS
    -e.g. position, balance, touch, motor impulses

5 True/False questions

  1. schwann cells-myelinated
    -large diameter
    -high speed
    -carry rapid information to/from CNS
    -e.g. position, balance, touch, motor impulses

          

  2. chemical synapse-the effect of a neurotransmitter on the postsynaptic membrane depends on the properties of the receptor, not on the nature of the neurotransmitter

          

  3. two types of postsynaptic potentialsexcitatory postsynaptic potential (EPSP)
    -graded depolarization of postsynaptic membrane

    inhibitory postsynaptic potential (IPSP)
    -graded hyperpolarization of postsynaptic membrane

          

  4. intro to neuroglia

          

  5. postsynaptic potentials-differing ionic concentrations between cytosol and extracellular fluid
    -selectively permeable membrane
    -transport mechanisms