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5 Written questions

5 Matching questions

  1. three types of sensory receptors
  2. depolorization, repolarization, and hyperpolarization
  3. intro to neuroglia
  4. events at a cholinergic synapse
  5. inhibition
  1. a
  2. b -action potential arrives, depolarizes synaptic knob
    -calcium ions enter synaptic knob, trigger exocytosis of ACh
    -ACh binds to receptors, depolarizes postsynaptic membrane
    -AChE breaks ACh into acetate and choline
  3. c a neuron that receives many IPSPs
    -is inhibited from producing an action potential
    -because the stimulation needed to reach threshold is increased
  4. d based on what kind of stimulus they respond to
    interoceptor - monitor internal systems; internal senses
    exteroceptors - external sense; distance senses (vision, hearing)
    proprioceptor - monitor position and movement
  5. e

5 Multiple choice questions

  1. also, synaptic knobs
    -neuromuscular junction
    -tips of telodenria
    -contain synaptic vesicles of neurotransmitters
  2. -multiple locations
    -many stimuli, arrive at multiple synapses
  3. -carries sensory info
    -from PNS sensory receptors to CNS
    -somatic nervous system (SNS)
    -autonomic nervous system (ANS)
  4. ependymal cells
  5. presynaptic cell - neuron that sends message
    postsynaptic cell - cell that receives message
    synaptic cleft - small gap that separates the presynaptic membrane and the postsynaptic membrane

5 True/False questions

  1. axon hillock-'switch' - if info is strong enough, switch is turned on


  2. repolarization-increases speed of action potentials
    -myelin insulates myelinated axons
    -makes nerves appear white


  3. ion movements and electrical signals-all plasma (cell) membranes produce electrical signals by ion movements
    -transmembrane potential is particularly important to neurons


  4. oligodendrocytes-maintain blood-brain barrier (isolates CNS)
    -control interstitial environment


  5. synaptic delay-fewer synapses mean faster response
    -reflexes may involve only one synapse


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