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5 Written questions

5 Matching questions

  1. efferent division
  2. RER and ribosomes
  3. initiating a change in the transmembrane potential
  4. interneurons
  5. two types of postsynaptic potentials
  1. a excitatory postsynaptic potential (EPSP)
    -graded depolarization of postsynaptic membrane

    inhibitory postsynaptic potential (IPSP)
    -graded hyperpolarization of postsynaptic membrane
  2. b chemically regulated channels -
    -acetylcholine

    mechanically regulated channels -
    -pressure (membrane distortion)
  3. c -carries motor commands
    -from CNS to PNS muscles and glands
  4. d -cells that provide brain power
    -most located in brain, spinal cord, autonomic ganglia
    -between sensory and motor neurons
  5. e produce neurotransmitters (proteins)

5 Multiple choice questions

  1. sensory neurons - afferent neurons of PNS; 10 million
    motor neurons - efferent neurons of PNS; 0.5 million
    interneuron - association neurons; CNS; 20 billion
  2. on a postsynaptic membrane -
    -depends on the receptor
    -not on the neurotransmitter

    E.G. acetylcholine (ACh) -
    -usually promotes action potentials
    -but inhibits cardiac neuromuscular junctions
  3. 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
  4. carries electrical signal (action potential) to target

5 True/False questions

  1. synaptic fatiguealso, synaptic knobs
    -neuromuscular junction
    -tips of telodenria
    -contain synaptic vesicles of neurotransmitters

          

  2. temporal and spatial summation

          

  3. resting potentialalso, 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

          

  4. type C fibers-unmyelinated
    -small diameter
    -slow speed
    -carry slower information
    -e.g. involuntary muscle, gland controls

          

  5. periodscells that send and receive signals

          

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