Anatomy of the Central and Peripheral Nervous System
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Questions and Answers

Which part of the nervous system is responsible for delivering information about the internal and external environment to the central nervous system?

  • Afferent division of the peripheral nervous system (correct)
  • Somatic motor division of the peripheral nervous system
  • Efferent division of the central nervous system
  • Interneurons within the brain and spinal cord
  • Which type of neurons are found within the brain and spinal cord, analyzing sensory input and organizing motor outputs?

  • Interneurons (correct)
  • Afferent neurons
  • Efferent neurons
  • Motor neurons
  • What is the term used to describe the ability of the plasma membrane to conduct electrical impulses?

  • Excitability (correct)
  • Synaptic communication
  • Action potential
  • Membrane potential
  • Which type of synapse involves the release of neurotransmitters at the presynaptic membrane and binding to receptor proteins on the postsynaptic membrane?

    <p>Chemical synapse</p> Signup and view all the answers

    What is the term used to describe the site of cellular or neuronal communication?

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

    Which division of the peripheral nervous system is responsible for stimulating the activity of the peripheral motor or organ systems?

    <p>Efferent division</p> Signup and view all the answers

    Which of the following structures surrounds the central nervous system (CNS)?

    <p>Cerebrospinal fluid</p> Signup and view all the answers

    Which cell type composes the neuroglia of the peripheral nervous system (PNS)?

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

    What is the function of Schwann cells in the PNS?

    <p>Wrap around part of a single axon</p> Signup and view all the answers

    Which type of neuron is the most common in the central nervous system (CNS)?

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

    Which of the following describes the structure of a pseudounipolar neuron?

    <p>Cell body lies outside the plane of the dendrite and axon</p> Signup and view all the answers

    What is the functional unit of the nervous system that transmits information through electrical impulses?

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

    What is the primary function of astrocytes?

    <p>Support and protect the neurons</p> Signup and view all the answers

    Which type of neuroglial cell is responsible for forming a myelin sheath around axons?

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

    What is the primary role of microglia in the central nervous system?

    <p>Act as phagocytic cells, engulfing debris and waste</p> Signup and view all the answers

    If a neuron is damaged, which type of neuroglial cell is mainly involved in repairing the nervous tissue?

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

    Which type of neuroglial cell lines the ventricles of the brain and central canal of the spinal cord?

    <p>Ependymal Cells</p> Signup and view all the answers

    What is the main function of oligodendrocytes in relation to axons?

    <p>Create a myelin sheath around axons</p> Signup and view all the answers

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