Nervous Tissue and Nervous System MED 1103:Histology 1
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Questions and Answers

Which part of the neuron takes the signal away from the cell body and communicates with other neurons or effector organs?

  • Schwann cell
  • Dendrite
  • Nucleus
  • Axon (correct)
  • Which type of neuron is most common and usually intermediate, integratory, or motor?

  • Bipolar
  • Multipolar (correct)
  • Pseudounipolar
  • Schwann cell
  • What is the gap between internodes of myelinated nerve fibers called?

  • Terminal bouton
  • Node of Ranvier (correct)
  • Nucleus
  • Lysosome
  • Which cells provide structural and metabolic support to axons in the peripheral nervous system?

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

    What increases the conduction velocity in nerve fibers?

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

    What is the function of the autonomic nervous system?

    <p>Connects CNS to other tissues</p> Signup and view all the answers

    What does depolarization of the neuron involve?

    <p>Sudden change of membrane potential with influx of sodium (passively)</p> Signup and view all the answers

    What is the main component of the central nervous system (CNS)?

    <p>Brain and spinal cord</p> Signup and view all the answers

    What is the resting potential of a neuron?

    <p>Charge difference when neuron is not firing</p> Signup and view all the answers

    What are the rapid changes in charge when a neuron is firing known as?

    <p>Action potential</p> Signup and view all the answers

    What is the main function of the autonomic nervous system?

    <p>Regulation of involuntary bodily functions</p> Signup and view all the answers

    Which process involves the restoration of membrane potential with potassium efflux in a neuron?

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

    What is the role of the refractory period in a neuron?

    <p>Restores the resting potential</p> Signup and view all the answers

    Where are cell bodies usually located in the neuron?

    <p>In the central nervous system</p> Signup and view all the answers

    What is the charge difference between inside and outside of a cell known as?

    <p>Membrane potential</p> Signup and view all the answers

    What is the main function of the terminal effector neurons?

    <p>Initiating action potentials</p> Signup and view all the answers

    In which type of neuron is the rough endoplasmic reticulum (Nissl body) present in the axon?

    <p>Pseudounipolar neurons</p> Signup and view all the answers

    What is the significance of the blue-stained myelin in neuropil in nerve fibers?

    <p>Indicates increased synaptic activity</p> Signup and view all the answers

    Which cells are responsible for myelinating axons in the central nervous system (CNS)?

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

    What is the function of saltatory conduction in myelinated nerve fibers?

    <p>Facilitates rapid transmission of action potentials</p> Signup and view all the answers

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