Toxins and the Neuromuscular Junction
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Questions and Answers

Which neurotransmitter is primarily affected by toxins that interfere with movement?

  • Dopamine
  • GABA
  • Acetylcholine (correct)
  • Serotonin
  • What effect do cholingeric agonist toxins have on muscle tone?

  • Cause muscle spasms
  • No effect on muscle tone
  • Decrease muscle tone
  • Increase muscle tone (correct)
  • Which toxin overstimulates the release of Ach from the alpha motor neuron, causing muscles to spasm in painful convulsions?

  • Botulium
  • Taiwanese cobra venom
  • Black widow spider venom (correct)
  • Curare
  • What happens in severe cases when the alpha motor neuron runs out of ACh?

    <p>Muscles become paralyzed</p> Signup and view all the answers

    Which type of toxin paralyzes muscles, including those for respiration?

    <p>Botulium</p> Signup and view all the answers

    Which neurotransmitter is primarily impacted by toxins that interfere with movement?

    <p>Acetylcholine</p> Signup and view all the answers

    What effect do cholinergic agonist toxins have on muscle tone?

    <p>Increase muscle tone</p> Signup and view all the answers

    Which toxin overstimulates the release of Ach from the alpha motor neuron, causing muscles to spasm in painful convulsions?

    <p>Black widow spider venom</p> Signup and view all the answers

    What happens in severe cases when the alpha motor neuron runs out of ACh?

    <p>Paralysis and death</p> Signup and view all the answers

    Which type of toxin paralyzes muscles, including those for respiration?

    <p>Cholinergic antagonists</p> Signup and view all the answers

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