Neurophysiology Chapter I Quiz: Organization of the Nervous System
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Questions and Answers

Which part of the neuron has the function of receiving information?

  • Axons
  • Dendrites (correct)
  • Peripheral nervous system
  • Central nervous system

    • What is the function of the peripheral nervous system?

  • Transmits electrochemical messages
  • Interprets sensory information
  • Controls all other organ systems
  • Carries out motor functions (correct)

    • What happens when neurons are destroyed by disease?

  • They lose their ability to divide
  • They cannot be replaced (correct)
  • They carry out motor functions
  • They transmit electrochemical messages

    • What does the central nervous system control?

    <p>Other organ systems</p> Signup and view all the answers

    Which part of the nervous system is responsible for carrying out motor functions based on sensory decisions?

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

    What is the main function of neurons?

    <p>Transmit electrochemical messages</p> Signup and view all the answers

    Which type of glial cell forms myelin in the CNS?

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

    What is the function of the blood-brain barrier in the CNS?

    <p>To prevent certain substances from entering the tissues of the CNS</p> Signup and view all the answers

    Where is cerebrospinal fluid located within the CNS?

    <p>Between the arachnoid mater and pia mater in the subarachnoid space</p> Signup and view all the answers

    What is the main function of neurotransmitters in the nervous system?

    <p>To initiate muscle contractions and relaxations</p> Signup and view all the answers

    Which cells form an intimate covering layer over large neuronal cell bodies in the ganglia of the PNS?

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

    What does the depolarization of the axon membrane imply?

    <p>The inside becomes more positive than the outside</p> Signup and view all the answers

    What provides an electrical connection between cells in the nervous system?

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

    Which part of the central nervous system descends into the vertebral canal and ends around the level of the first or second lumbar vertebra?

    <p>Spinal segments</p> Signup and view all the answers

    What is the main function of astrocytes in the nervous system?

    <p>Control of blood-brain barrier</p> Signup and view all the answers

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

    <p>Controlling all other organ systems</p> Signup and view all the answers

    What happens when neurons are destroyed by disease?

    <p>They lose their ability to divide</p> Signup and view all the answers

    What is the function of the dendrites in a neuron?

    <p>Receiving information for the neuron</p> Signup and view all the answers

    What is the main function of astrocytes in the nervous system?

    <p>Supporting and protecting neurons</p> Signup and view all the answers

    Where is cerebrospinal fluid located within the CNS?

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

    What is the general function of the nervous system?

    <p>Detecting and interpreting sensory information</p> Signup and view all the answers

    What is the main function of microglia cells in the CNS?

    <p>Macrophages of the CNS</p> Signup and view all the answers

    Where is the area called the subarachnoid space located?

    <p>Between arachnoid mater and pia mater</p> Signup and view all the answers

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

    <p>Line cerebral ventricles and central canal of the spinal cord</p> Signup and view all the answers

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

    <p>Cover large neuronal cell bodies in the ganglia of the PNS</p> Signup and view all the answers

    Which part of the neuron provides an electrical connection between cells?

    <p>Synaptic knob</p> Signup and view all the answers

    What is the primary function of astrocytes in the nervous system?

    <p>Guiding axons and providing synaptic support</p> Signup and view all the answers

    What is the primary function of neurotransmitters in the nervous system?

    <p>Activating neurons to send nerve impulses</p> Signup and view all the answers

    Which part of the central nervous system includes a blood-brain barrier (BBB)?

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

    What is the specific function of oligodendrocytes in the CNS?

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

    Where does cerebrospinal fluid (CSF) primarily function within the CNS?

    <p>Cushions the CNS</p> Signup and view all the answers

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