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5 Written questions

5 Matching questions

  1. Electrical synapses
  2. small clear-core vesicle
  3. mini end plate potentials (MEPPS)
  4. syntaxin and SNAP-25
  5. Gap Junctions
  1. a make up EPPS and correspond to the release of just one or two vesicle. Small, happen spontaneously, and cannot trigger an AP.
  2. b Vesicles that contain small molecule neurotransmitters. These vesicles appear clear in electron micrographs. Made in the axon terminal by enzymes shipped down by slow axonal transport from the soma.
  3. c T-SNARE proteins embedded to the pre-synapatic membrane; attach to synaptic vesicles for vesicle fusion
  4. d Make electrical synapses possible. Consists of hexameric subunits made up of subunits called connexons.
  5. e Work by allowing ionic current to flow PASSIVELY through the gap junction pores from one neuron to the next. Very fast transmission.

5 Multiple choice questions

  1. recycling process for synaptic vesicle. Process takes about 1 minute.
  2. neuromuscular junctions when synapses from the pre-synaptic axon elaborate and appear in a saucer-like shape on the muscle fiber
  3. a very important protein involved in endocyctotic budding of vesicles from the plasma membrane. Assemble together (by polymerization) to form membrane coats during the budding of the phase synaptic vesicle cycle.
  4. a kinase that phosphorylates synapsin and causes it to let go of the synaptic vesicles it is holding in the reserve pool
  5. A neurotransmitter found primarily at neuromuscular junctions of the striated muscles and in the visceral motor system. Involved in muscle contraction and heart rate increases.

5 True/False questions

  1. synapsinreversibly binds to synaptic vesicles and may cross link vesicle to actin filaments in the cytoskeleton to keep the vesicles tethered within the reserve pool.

          

  2. Neurotransmitterschemical agents acting as messengers between the communicating neurons. Released from vesicle when the is a large Ca++ influx into the cell. How many are released depends on how much Ca++ enters the terminal.

          

  3. hsc-70partially blocks post synaptic ACh receptors when placed in the extracellular medium. Used to study EPPs and MEPPs.

          

  4. co-transmitterschemical agents acting as messengers between the communicating neurons. Released from vesicle when the is a large Ca++ influx into the cell. How many are released depends on how much Ca++ enters the terminal.

          

  5. SNAPs (soluble NSF-attachments proteins)an ATPase involved in priming synaptic vesicle for fusion