Neurotransmitter Synthesis and Synaptic Communication
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Questions and Answers

What is the role of distinct key enzymes in neurotransmitter synthesis?

  • To synthesise each type of neurotransmitter (correct)
  • To release neurotransmitters into the synaptic cleft
  • To degrade neurotransmitters
  • To inhibit neurotransmitter receptors

    • What is the effect of Na+ channel blockers on neural activity?

  • Increase neural activity
  • Increase neurotransmitter synthesis
  • Have no effect on neural activity
  • Decrease neural activity (correct)

    • What is the role of Ca2+ entry in neurotransmission?

  • To trigger neurotransmitter release from the presynapse (correct)
  • To inhibit neurotransmitter receptors
  • To inhibit neurotransmitter release
  • To synthesise neurotransmitters

    • What is the effect of receptor agonists on neurotransmission?

    <p>Mimic or enhance neurotransmission</p> Signup and view all the answers

    What is the function of SNARE complex in neurotransmission?

    <p>To inhibit neurotransmitter release</p> Signup and view all the answers

    What is the effect of Ca2+ channel blockers on neurotransmission?

    <p>Decrease neurotransmitter release</p> Signup and view all the answers

    What is the primary mechanism by which neurotransmitters are removed from the synaptic cleft?

    <p>Reuptake by presynaptic neurons</p> Signup and view all the answers

    Which neurotransmitter is involved in the regulation of pituitary secretions?

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

    What is the enzyme responsible for the biosynthesis of γ-aminobutyric acid (GABA)?

    <p>Glutamic acid decarboxylase</p> Signup and view all the answers

    Which receptor is involved in the modulation of serotonin activity?

    <p>5-HT receptor</p> Signup and view all the answers

    What is the major neurotransmitter of the CNS that is involved in fast excitatory transmission?

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

    What is the mechanism by which certain drugs increase neurotransmitter activity?

    <p>Inhibiting degradation enzymes</p> Signup and view all the answers

    What is the first step in the process of neurotransmission?

    <p>Neurotransmitter synthesis and storage</p> Signup and view all the answers

    What is the purpose of neurotransmitter reuptake?

    <p>To terminate the signal</p> Signup and view all the answers

    What is the role of receptors in neurotransmission?

    <p>To bind to neurotransmitters and transmit the signal</p> Signup and view all the answers

    What is the final step in the process of neurotransmission?

    <p>Neurotransmitter degradation/reuptake</p> Signup and view all the answers

    What is the purpose of neurotransmitter degradation?

    <p>To terminate the signal</p> Signup and view all the answers

    What is the role of precursor molecules in neurotransmission?

    <p>To synthesize neurotransmitters</p> Signup and view all the answers

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