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 (B)</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 (A)</p> Signup and view all the answers

What is the role of myelin in neurons?

<p>Speeds up the nervous message (C)</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 (A)</p> Signup and view all the answers

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

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

Which neuron classification is based on having many cytoplasmic prolongations?

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

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