Neurons and Synapses Overview
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Questions and Answers

What is the main function of the axon in a neuron?

  • Producing neurotransmitters
  • Receiving neurotransmitters
  • Carrying impulses away from the cell body (correct)
  • Creating the synapse junction
  • Which cells are responsible for CNS myelination?

  • Astrocytes
  • Schwann cells
  • Oligodendrocytes (correct)
  • Microglial cells
  • What is the role of synapses in neural communication?

  • Transmitting information from one neuron to another (correct)
  • Secreting nutrients for neurons
  • Insulating neurons
  • Carrying impulses towards the cell body
  • During the refractory period of a neuron, what is happening?

    <p>The neuron is at rest and cannot generate another action potential</p> Signup and view all the answers

    Which type of glial cells are responsible for injury repair in the nervous system?

    <p>Microglial cells</p> Signup and view all the answers

    What happens during a neural impulse with regard to ions?

    <p>Positively and negatively charged ions flow back and forth across the cell membrane</p> Signup and view all the answers

    What is the main function of dendrites in a neuron?

    <p>Receive information and send it towards the cell body/soma</p> Signup and view all the answers

    What is the purpose of the myelin sheath in a neuron?

    <p>Speed up transmission of impulses</p> Signup and view all the answers

    What is the function of the nucleus in a neuron?

    <p>Contains genetic material instructions</p> Signup and view all the answers

    Where does the information move from in a neuron to the soma?

    <p>Axon to dendrites</p> Signup and view all the answers

    Which part of a neuron contains chemicals common to most cells?

    <p>Cell body/soma</p> Signup and view all the answers

    In a neuron, where does the vast majority of communication occur?

    <p>Between synapses</p> Signup and view all the answers

    What is the function of the synapse in neural communication?

    <p>To communicate signals between neurons</p> Signup and view all the answers

    During the absolute refractory period, what occurs?

    <p>The neuron is unable to fire another action potential</p> Signup and view all the answers

    What triggers the release of neurotransmitters at the axon's terminal button?

    <p>Arrival of an action potential</p> Signup and view all the answers

    What effect can be produced at the receiving synapse as a result of neural communication?

    <p>Increase in the chances of firing an action potential</p> Signup and view all the answers

    What does the relative refractory period indicate about the firing of a neuron?

    <p>The firing of the neuron requires more intense stimulation</p> Signup and view all the answers

    What is the function of the postsynaptic neuron in neural communication at synapses?

    <p>To receive signals from the presynaptic neuron</p> Signup and view all the answers

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