Pharmacology of the NMJ - Medicine BM5 NLM1

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1. What is the mechanism of action of a large number of local anaesthetics?

  • They block the sodium channels involved in propagating the nerve impulse
  • They block the calcium channels involved in propagating the nerve impulse
  • They block the action of AChE in breaking down ACh in the synaptic cleft
  • They block the release of ACh by breaking down the ACh vesicles whilst they are still in the pre-synaptic knob
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Other questions in this quiz

2. What action does suxamethonium cause?

  • Depolarizing blockade
  • Transmission block
  • Repolarizing blockade
  • Motor End Plate Potential (MEPP)

3. In which fish is tetrodotoxin commonly found?

  • Goldfish
  • Pufferfish
  • Piranha
  • Stingray

4. Edrophonium is a short actin anticholinesterase. What is it used to diagnose?

  • Myasthenia Gravis
  • Cataracts
  • Astigmatism
  • Glaucoma

5. Which of the following groups of people are most at risk from organophosphate poisoning?

  • Bankers
  • Farmers
  • Postal workers
  • Doctors

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