Choline Transport and Hemicholinium
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Questions and Answers

Which of the following is true about the transport of choline into the cytoplasm of the cholinergic neuron?

  • It requires the presence of sodium (correct)
  • It occurs through diffusion
  • It is a passive process
  • It is inhibited by the drug hemicholinium

What is the role of sodium in the transport of choline into the cytoplasm of the cholinergic neuron?

  • It facilitates the diffusion of choline
  • It is required for the energy-dependent carrier system (correct)
  • It inhibits the transport process
  • It is transported along with choline

Which drug can inhibit the transport of choline into the cytoplasm of the cholinergic neuron?

  • Sodium
  • Cytoplasm
  • Hemicholinium (correct)
  • Choline

Which of the following is true about the transport of choline into the cytoplasm of the cholinergic neuron?

<p>The transport of choline is facilitated by a carrier system that cotransports sodium ions. (D)</p> Signup and view all the answers

Which drug can inhibit the transport of choline into the cytoplasm of the cholinergic neuron?

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

What happens to the transport of choline into the cytoplasm of the cholinergic neuron when the carrier system is inhibited by hemicholinium?

<p>The transport of choline stops completely (C)</p> Signup and view all the answers

Which of the following is the rate-limiting step in acetylcholine synthesis?

<p>The uptake of choline (A)</p> Signup and view all the answers

What is the significance of the rate-limiting step in acetylcholine synthesis?

<p>It determines the overall rate of acetylcholine synthesis (B)</p> Signup and view all the answers

What happens if the uptake of choline is inhibited?

<p>The synthesis of acetylcholine is reduced (C)</p> Signup and view all the answers

Which of the following is the rate-limiting step in acetylcholine synthesis?

<p>The transport of choline into the cytoplasm (C)</p> Signup and view all the answers

What happens if the uptake of choline is inhibited?

<p>The production of acetylcholine is reduced (C)</p> Signup and view all the answers

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