Introduction to Somatic and Autonomic Nervous System
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Questions and Answers

Where is choline actively accumulated from extraneuronal sites?

  • In the myelin sheath surrounding the neuron
  • In the cell body of the neuron
  • In the dendrites of the neuron
  • In the axoplasm of the neuron (correct)

    • What is the process by which acetylcholine (ACh) is synthesized from choline?

  • Choline is converted to ACh in the cell body of the neuron
  • Choline is converted to ACh in the myelin sheath surrounding the neuron
  • Choline is converted to ACh in the axoplasm (correct)
  • Choline is converted to ACh in the dendrites of the neuron

    • Where is the synthesized ACh stored within the neuron?

  • In the storage vesicles in the cholinergic nerve terminal (correct)
  • In the axoplasm
  • In the cell body of the neuron
  • In the dendrites of the neuron

    • What triggers the release of ACh from the storage vesicles in the cholinergic nerve terminal?

    <p>The arrival of sufficient action potential stimuli</p> Signup and view all the answers

    At which of the following sites is ACh released as a neurotransmitter?

    <p>The terminal end of both peripheral sympathetic and parasympathetic preganglionic nerves</p> Signup and view all the answers

    At which of the following sites is ACh released as a neurotransmitter?

    <p>Peripheral postganglionic terminal of parasympathetic nerves</p> Signup and view all the answers

    At which of the following sites is ACh released as a neurotransmitter?

    <p>The neuromuscular junction (NMJ)</p> Signup and view all the answers

    At which of the following sites is ACh released as a neurotransmitter?

    <p>Cholinergic neurons in the central nervous system (CNS)</p> Signup and view all the answers

    Which of the following statements is true regarding the synthesis and release of ACh?

    <p>ACh is synthesized in the axoplasm and released from the axon terminals</p> Signup and view all the answers

    Which of the following statements is false regarding the release sites of ACh?

    <p>ACh is released at the terminal end of both peripheral sympathetic and parasympathetic postganglionic nerves</p> Signup and view all the answers

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