L24 MCQ - Principles of CNS Neurotransmission Quiz
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Questions and Answers

Which type of cells are responsible for supporting the function of neurons?

  • Schwann cells
  • Oligodendrocytes
  • Microglia
  • Astrocytes (correct)

    • How many connections does each neuron typically have?

  • 100,000-1,000,000
  • 10,000-100,000
  • 1,000-10,000 (correct)
  • 1,000,000-10,000,000

    • What is the role of glia cells in the nervous system?

  • Synapse formation
  • Supporting function (correct)
  • Communication of information
  • Input integration of signal

    • What are the specialized sites where neurons communicate with other cells via neurotransmitters called?

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

    What are the four steps involved in neurotransmission?

    <p>Synthesis, storage, release, termination</p> Signup and view all the answers

    Where is neurotransmitter synthesis usually carried out?

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

    What is the classification of neurotransmitters that are small molecules?

    <p>Classical NTs</p> Signup and view all the answers

    What are neuropeptides?

    <p>Short peptides that are neuroactive</p> Signup and view all the answers

    What is the role of oligodendrocytes and Schwann cells?

    <p>Supporting function</p> Signup and view all the answers

    What is the email address of Prof. Adrienne Gorman?

    <p><a href="mailto:[email protected]">[email protected]</a></p> Signup and view all the answers

    Which of the following is NOT one of the classical (small molecule) neurotransmitters?

    <p>Arachidonic acid</p> Signup and view all the answers

    What is the role of the myelin sheath in the transmission of electrical signals?

    <p>All of the above</p> Signup and view all the answers

    What is the function of Ca2+ in neurotransmitter release?

    <p>It converts the electrical signal into a chemical signal</p> Signup and view all the answers

    Which proteins control the fusion of the synaptic vesicle membrane with the presynaptic membrane?

    <p>SNARE proteins</p> Signup and view all the answers

    Which of the following diseases is NOT associated with abnormalities in neurotransmission at neuromuscular synapses?

    <p>Botulinum toxin</p> Signup and view all the answers

    What is the role of the heavy chain of botulinum toxin in the neuromuscular junction (NMJ)?

    <p>It facilitates the entry of the toxin into neurons</p> Signup and view all the answers

    What are the medical uses of botulinum toxin?

    <p>All of the above</p> Signup and view all the answers

    What are the two main kinds of neurotransmitter receptors?

    <p>Ionotropic and metabotropic</p> Signup and view all the answers

    How do ionotropic receptors differ from metabotropic receptors?

    <p>All of the above</p> Signup and view all the answers

    What are the main mechanisms for the termination of the effect of a neurotransmitter?

    <p>Enzymatic degradation, uptake into neurons, and diffusion away from synaptic cleft</p> Signup and view all the answers

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