Strychnine
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Questions and Answers

Which part of the strychnos nux vomica tree is toxic?

  • Seeds (correct)
  • Fruit pulp
  • Leaves
  • Bark

What is the main alkaloid found in the seeds of strychnos nux vomica?

  • Brucine
  • Loganin
  • Kuchila
  • Strychnine (correct)

Which part of the strychnos nux vomica tree contains only brucine?

  • Bark (correct)
  • Seeds
  • Fruit pulp
  • Leaves

What is the appearance of the seeds of nux vomica?

<p>Flat and circular (C)</p> Signup and view all the answers

Which alkaloid is more poisonous, strychnine or brucine?

<p>Strychnine (D)</p> Signup and view all the answers

Which part of the body absorbs strychnine?

<p>Liver (D)</p> Signup and view all the answers

How is strychnine excreted from the body?

<p>Through urine (D)</p> Signup and view all the answers

What is the primary use of strychnine?

<p>Respiratory stimulant (B)</p> Signup and view all the answers

Which alkaloid is found in the bark, wood, and leaves of nux vomica?

<p>Brucine (C)</p> Signup and view all the answers

What is the color of the seeds of nux vomica?

<p>Ash-grey (B)</p> Signup and view all the answers

Which neurotransmitter is not affected by the action of strychnine?

<p>GABA (B)</p> Signup and view all the answers

What symptoms occur rapidly when strychnine is swallowed?

<p>Feeling of suffocation and fear (B)</p> Signup and view all the answers

Where does strychnine competitively block receptor sites?

<p>Spinal cord and brainstem (C)</p> Signup and view all the answers

What is the primary effect of strychnine on the spinal cord?

<p>Selective excitation (A)</p> Signup and view all the answers

What happens when the seeds of nux vomica are swallowed or crushed?

<p>They have no poisonous action (A)</p> Signup and view all the answers

Which of the following is a symptom that precedes convulsions?

<p>Rigidity of muscles (B)</p> Signup and view all the answers

What is the characteristic appearance of the face during convulsions?

<p>Cyanosed with an anxious look (B)</p> Signup and view all the answers

Which muscle contraction results in risus sardonicus during convulsions?

<p>Jaw muscles (A)</p> Signup and view all the answers

Which body position is typically observed during convulsions?

<p>Supine with supported head and heels (A)</p> Signup and view all the answers

What is the primary type of muscle movement during convulsions?

<p>Clonic (A)</p> Signup and view all the answers

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