Neuron and Nervous Message
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Questions and Answers

What is the membrane potential called when there is an unequal distribution of ions and different membrane permeability of ions?

  • Hyperpolarization potential
  • Action potential
  • Resting potential (correct)
  • Depolarization potential
  • What is the value of the membrane potential during resting potential?

  • +30 mV
  • -30 mV
  • -50 mV
  • -70 mV (correct)
  • During which phase of action potential does the inner medium of the cell become more positive?

  • Hyperpolarization
  • Resting phase
  • Repolarization
  • Depolarization (correct)
  • What happens to the inner medium during the repolarization phase of action potential?

    <p>It gradually becomes negatively charged again</p> Signup and view all the answers

    What is the potential difference between the inner medium and outside medium during action potential?

    <p>+30 mV</p> Signup and view all the answers

    What is the role of myelin in neurons?

    <p>Speeds up the nervous message</p> Signup and view all the answers

    Which type of neuron transmits the nervous message from the sensory receptor towards the Central Nervous System?

    <p>Sensory neuron</p> Signup and view all the answers

    In terms of myelin presence, what characterizes non-myelinated neurons?

    <p>Lacks myelin sheath</p> Signup and view all the answers

    Which neuron classification is based on having many cytoplasmic prolongations?

    <p>Multipolar neuron</p> Signup and view all the answers

    What characterizes the resting potential of neurons regarding ion concentration?

    <p>Intracellular medium has more K+ ions than Na+ ions</p> Signup and view all the answers

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