Classification of Neurons
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Questions and Answers

Which type of neurons are most commonly unipolar in structure?

  • Bipolar neurons
  • Motor neurons
  • Sensory neurons (correct)
  • Multipolar neurons

    • What is the main function of Schwann cells in the peripheral nervous system (PNS)?

  • Form myelin sheath around axons (correct)
  • Surround, protect and support the cell body (soma)
  • Secrete cerebrospinal fluid
  • Maintain the blood-brain barrier

    • Which neuroglia type resembles macrophages in function?

  • Oligodendrocytes
  • Astrocytes
  • Microglia (correct)
  • Ependymal cells

    • What are the factors that affect the speed of conduction of an action potential?

    <p>Size of the axon, myelination level, and temperature</p> Signup and view all the answers

    What do interneurons primarily do in the central nervous system (CNS)?

    <p>Receive information and send it to another interneuron or motor neuron</p> Signup and view all the answers

    Which classification of neurons has a structure with one process fused together to form a continuous process?

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

    What is the main function of Oligodendrocytes in the central nervous system (CNS)?

    <p>Form multiple myelin sheaths</p> Signup and view all the answers

    Which type of neurons are most commonly multipolar in structure?

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

    How do Schwann cells contribute to nerve conduction in the peripheral nervous system (PNS)?

    <p>Surround axons and form myelin sheath</p> Signup and view all the answers

    What is the primary role of Interneurons in the central nervous system (CNS)?

    <p>Receive information either from another interneuron or sensory neuron</p> Signup and view all the answers

    In terms of speed of signal conduction, which factor affects the signal speed by altering the temperature?

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

    Which type of neurons have one dendrite fused together with the axon to form a continuous process?

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

    Schwann cells in the peripheral nervous system form multiple myelin sheaths on a single axon.

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

    Astrocytes are the smallest and least numerous neuroglia in the central nervous system.

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

    Ependymal cells secrete cerebrospinal fluid in the peripheral nervous system.

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

    In the gray matter, integration of signals primarily occurs in the dendrites.

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

    Unipolar neurons have two processes: one dendrite and one axon.

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

    Increasing the temperature can slow down the speed of signal conduction in neurons.

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

    Motor neurons are typically unipolar in structure.

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

    Oligodendrocytes in the central nervous system help maintain the blood-brain barrier.

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

    Agonist drugs inhibit the effect of a neurotransmitter.

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

    Interneurons primarily send information directly to effectors like muscles and glands.

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

    What is the main function of microglia in the CNS?

    <p>Remove cellular debris</p> Signup and view all the answers

    Describe the structure of a unipolar neuron.

    <p>One process fused dendrite and axon</p> Signup and view all the answers

    How do astrocytes contribute to the CNS?

    <p>Help support cell bodies and maintain the blood-brain barrier</p> Signup and view all the answers

    What are the two types of neuroglia found in the PNS?

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

    What is the primary function of ependymal cells in the CNS?

    <p>Secrete cerebrospinal fluid</p> Signup and view all the answers

    Explain the role of oligodendrocytes in the CNS.

    <p>Form myelin sheaths</p> Signup and view all the answers

    What is the primary function of satellite cells in the PNS?

    <p>Surround, protect, and support the cell body</p> Signup and view all the answers

    How does the amount of myelination affect the speed of action potential conduction?

    <p>The more myelinated, the faster it goes</p> Signup and view all the answers

    What is the primary role of interneurons in the CNS?

    <p>Receive and send information within the CNS</p> Signup and view all the answers

    What are the three factors that affect the speed of conduction of an action potential?

    <p>Myelination, axon diameter, temperature</p> Signup and view all the answers

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