Autonomic Nervous System Anatomy

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Questions and Answers

Where is true cholinesterase primarily found?

  • Plasma surface
  • Terminal nerve endings (correct)
  • Synaptic area
  • Body fluids

What is the affinity of pseudocholinesterase to Ach?

  • High
  • Nonspecific
  • Specific
  • Less (correct)

What is the location of muscarinic cholinergic receptors?

  • On effector cell membranes (correct)
  • Autonomic ganglia
  • Motor end plate of skeletal muscle
  • Adrenal medulla

What is the site of release for noradrenaline?

<p>Postganglionic sympathetic fibers (B)</p>
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What is the mechanism of catecholamine inactivation?

<p>All of the above (D)</p>
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What percentage of noradrenaline is inactivated by enzymatic destruction?

<p>17% (D)</p>
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What is the type of receptor activated by nicotine?

<p>Nicotinic receptor (A)</p>
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What is the location of nicotinic cholinergic receptors?

<p>All of the above (D)</p>
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What is the percentage of adrenaline released by the adrenal medulla?

<p>80% (D)</p>
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What is the function of catechol-O-methyl transferase?

<p>Enzymatic destruction of noradrenaline (D)</p>
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