Functions of the Human Nervous System
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Questions and Answers

Which part of the nervous system functions to link the CNS with the various parts of the body?

  • Peripheral Nervous System (PNS) (correct)
  • Spinal Cord
  • Sensory Neurons
  • Central Nervous System (CNS)

    • What are the major organs for processing sensory input and initiating responses?

  • Sensory Neurons
  • Central Nervous System (CNS) (correct)
  • Peripheral Nervous System (PNS)
  • Spinal Cord

    • Which division of the PNS conducts action potentials from the sensory receptors to the CNS?

  • Peripheral Nervous System (PNS)
  • Sensory Neurons
  • Central Nervous System (CNS)
  • Sensory Division or Afferent Division (correct)

    • What is the function of Sensory Neurons?

    <p>Transmitting action potentials from the periphery to the CNS</p> Signup and view all the answers

    Which part of the nervous system is responsible for controlling muscles and glands?

    <p>Peripheral Nervous System (PNS)</p> Signup and view all the answers

    Where are sensory receptors located?

    <p>Throughout the body</p> Signup and view all the answers

    Which type of cells make up the nervous system?

    <p>Neurons and glial cells</p> Signup and view all the answers

    What is the main function of motor neurons?

    <p>Transmitting action potentials from the CNS to effector organs</p> Signup and view all the answers

    What is the function of dendrites in a neuron?

    <p>Receive information from other neurons or sensory receptors</p> Signup and view all the answers

    What is the role of glial cells in the nervous system?

    <p>Primarily supportive cells of the CNS and PNS</p> Signup and view all the answers

    What is the function of myelin sheaths around axons?

    <p>Increase the speed and efficiency of action potential generation along the axon</p> Signup and view all the answers

    What occurs at the nodes of Ranvier?

    <p>Ion movement can occur at the nodes of Ranvier</p> Signup and view all the answers

    What is an action potential?

    <p>An explosion of electrical activity that is created by a neuron sending information down an axon</p> Signup and view all the answers

    Which part of a neuron contains a single nucleus and provides energy to drive activities?

    <p>&quot;Cell body&quot; or soma</p> Signup and view all the answers

    Which type of cells are far more numerous than neurons in the nervous system?

    <p>&quot;Glial cells&quot; or neuroglia</p> Signup and view all the answers

    What is one major difference between myelinated and unmyelinated axons?

    <p>&quot;Speed and efficiency of action potential generation&quot;</p> Signup and view all the answers

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