Neuron Communication and Neurochemistry Quiz
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Questions and Answers

Which of the following is responsible for the regeneration of the action potential in the myelin sheath?

  • Glial cells
  • Sodium channels
  • Oligodendrocytes
  • Nodes of Ranvier (correct)

What is the main function of the sodium-potassium pumps in the neuron?

  • To maintain the myelin sheath
  • To regulate neurotransmitter release
  • To restore the resting potential (correct)
  • To generate the action potential

What happens during the refractory period of a neuron?

  • Neurons fire at a higher rate
  • Neurons fire in both directions
  • Neurons release more neurotransmitters
  • Neurons cannot fire (correct)

What is the role of the myelin sheath in neural communication?

<p>To insulate neurons (B)</p> Signup and view all the answers

Which ions are important for the resting membrane potential of a neuron?

<p>Sodium and potassium ions (C)</p> Signup and view all the answers

What is the main function of the voltage-gated ion channels in a neuron?

<p>To generate the action potential (A)</p> Signup and view all the answers

What is the main cause of Multiple Sclerosis?

<p>Degradation of oligodendrocytes (B)</p> Signup and view all the answers

Which cells are responsible for myelinating neurons in the central nervous system?

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

What is the main function of myelin in neurons?

<p>To protect and speed up electrical signals (D)</p> Signup and view all the answers

What is the role of EPSP in neuronal communication?

<p>To increase the likelihood of generating an action potential (A)</p> Signup and view all the answers

What is the main way that neurons communicate with each other?

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

What triggers the release of neurotransmitters into the synaptic cleft?

<p>Increase in calcium (B)</p> Signup and view all the answers

How are unbound neurotransmitters cleared from the synapse?

<p>Endocytosis or transporters (D)</p> Signup and view all the answers

Which cells release neurotransmitters through exocytosis upon action potential?

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

What effect do serotonin reuptake inhibitors have on serotonin levels in the synaptic cleft?

<p>Increase relative serotonin (C)</p> Signup and view all the answers

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