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5 Written questions

5 Matching questions

  1. othodromic
  2. GPCRs basic structure
  3. time constant
  4. excitatory nts
  5. myelin
  1. a - ap travels in one direction
  2. b - cause an EPSP on the post synaptic neuron
    - glumate is the most common cns nt
    - aspartic acid is also a nt
  3. c - single polypeptide with seven membrane spanning alpha-helices
  4. d - facilitates current flow of ap
    - has high capacitance so the membrane stores charges and ions do not move acress the membrane
  5. e - the amount of time that a psp will last at a given membrane location = tau
    - time it takes for constant applied voltage to build up to 63% of its final value

5 Multiple choice questions

  1. - involved in controlling movement, by sequentially activating muscles
    - lesions cause ataxia
    - derieved from hindbrain, but not part of the brain stem
    - connected to pons & medulla
    - coordinate muscle activity
    - posutre
    - equilibrium
    - spatial reasoning
    - right & left hemispheres
  2. - impair somatic sensation
  3. - needed for vesicle exocytosis
    - binds to voltage sensitive calcium channel so that it is physically close to the two opposing membranes that will fuse after synaptotagmin binds calcium
  4. - has one gate, n
    - threshold depolarization opens K channels
    - n gate opens more slowly than m gate on Na channels
    - Na and K currents do not offset each other right away
  5. - start with "g"
    - also aspartate
    - made in axon terminus (synaptic vesicles

5 True/False questions

  1. sound frequency- phase locking: consistent firing of cell at same sound wave phase
    - neurons fire in phase with some point of the sound wave
    - either at the peak, valley, or inbetween, but it is constant for that neuron
    - indicated by the ap firing rate


  2. h gate sodium channel- compartment connected to round window
    - has perilymph fluid


  3. first-order neurons- has the sensory receptor
    - innervates skin by right & left dorsal roots of a single spinal segment


  4. primary somatosensory cortex- in partietal lobe, posterior to central sulcus
    - carriers on higher order processing of sensory info
    - receives synaptic input from vp nucleus of thalamus
    - respond to somatosensory info
    - thalamic input it to cortical layer IV which sends axons to other layers in the same area
    - reciprocal (bidirectional) connections between cortical areas & association pathways


  5. rising phase- triggered be depolarization (has a voltage gate)
    - reverse polarity
    - refractory period (inactivation gate)
    - m gate
    - h gate