Plant Toxicity: Poisonous Plants and Mushroom Poisoning
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Questions and Answers

Which mushroom toxin acts as a GABA-receptor agonist and is mildly hallucinogenic?

  • Muscimol and ibotenic acid (correct)
  • Norleucine
  • Amatoxins
  • Gyromitrins
  • Which mushroom toxin inhibits RNA polymerase II and protein synthesis?

  • Orellanine
  • Gyromitrins
  • Amatoxins (correct)
  • Muscarine
  • Which mushroom toxin causes renal tubular necrosis?

  • Gyromitrins
  • Amatoxins
  • Muscimol and ibotenic acid
  • Orellanine (correct)
  • Which mushroom toxin stimulates M1 and M2 types of postganglionic cholinergic receptors?

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

    Which complication of mushroom toxicity may involve loss of airway protective reflexes?

    <p>Respiratory complications</p> Signup and view all the answers

    Study Notes

    Plant Toxicity

    • A poisonous plant is a plant that can be harmful or fatal to an organism when touched or ingested in sufficient quantity.

    Examples of Poisonous Plants

    • Mushroom
    • Foxglove
    • Castor bean
    • Free tobacco

    Mushroom Toxicity

    • Mushroom toxicity occurs after ingesting mushrooms that contain toxins, which can be mistaken for non-toxic mushrooms.
    • Only about 100 out of thousands of mushroom species can cause symptoms when eaten by humans.
    • Only 15-20 mushroom species are potentially lethal when ingested.

    Challenges in Identifying Poisonous Mushrooms

    • There is no simple rule to distinguish edible mushrooms from poisonous ones.
    • Over 95% of mushroom toxicity cases occur due to misidentification of poisonous mushrooms with edible ones.

    Classification of Mushroom Poisoning

    Early Symptom Category

    • Symptoms develop within the first 6 hours of ingestion.
    • Includes gastrointestinal, allergic, and neurologic syndromes.

    Late Symptom Category and Delayed Symptom Categories

    • Not specified in the text.

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    Description

    Explore the harmful effects of poisonous plants and the dangers associated with mushroom toxicity. Learn about the symptoms and reactions caused by ingesting or touching toxic plants.

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