The Deadly Tetrodotoxin
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Questions and Answers

Tetrodotoxin (TTX) is a neurotoxin because

  • it blocks neurotransmitter release
  • it blocks the ion channels that control action potential generation (correct)
  • it prevents neurotransmitter binding
  • it poisons neurons and causes them to degenerate

    • When curare blocks the action of a neurotransmitter by occupying its receptor sites it is acting as

  • an antagonist (correct)
  • a neurotransmitter
  • an agonist
  • a placebo

    • Which of the following neurotransmitters has been implicated in both Parkinson’s disease and schizophrenia?

  • dopamine (correct)
  • noradrenaline
  • glutamate
  • serotonin

    • Mary failed the knee jerk reflex test – this failure may indicate problems in:

    <p>neural pathways in the spinal cord</p> Signup and view all the answers

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