Mastering Myelin and Grey/White Matter
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Questions and Answers

Which division of the peripheral nervous system transmits impulses towards the CNS?

  • Schwann cell division
  • Sensory (afferent) division (correct)
  • Motor (efferent) division
  • Support cell division
  • What is the function of the autonomic nervous system (ANS)?

  • To control involuntary movements of smooth and cardiac muscles (correct)
  • To control the spinal cord
  • To control the skeletal muscles
  • To control voluntary movements
  • Where is the cell body of a somatic efferent neuron located?

  • In a ganglion
  • In the spinal cord
  • In the brain
  • In the gray matter of the CNS (correct)
  • Which division of the peripheral nervous system transmits sensory impulses towards the CNS?

    <p>Somatic afferent division</p> Signup and view all the answers

    How many cervical nerves are there in the spinal nerves?

    <p>8</p> Signup and view all the answers

    What is the function of the phrenic nerve?

    <p>To transmit sensory impulses to the CNS</p> Signup and view all the answers

    Which division of the nervous system is responsible for the fight or flight response?

    <p>Sympathetic Nervous System</p> Signup and view all the answers

    Which division of the autonomic nervous system is responsible for rest and digest activities?

    <p>Parasympathetic Nervous System</p> Signup and view all the answers

    Where are the nerve cell bodies of postganglionic sympathetic neurons located?

    <p>In the thoracolumbar region of the spinal cord</p> Signup and view all the answers

    What type of muscles does the autonomic nervous system innervate?

    <p>Smooth muscles and cardiac muscles</p> Signup and view all the answers

    How many neurons are there in the autonomic nervous system?

    <p>2 neurons</p> Signup and view all the answers

    What is the main function of the somatic efferent division of the nervous system?

    <p>To coordinate voluntary movements of skeletal muscles</p> Signup and view all the answers

    Which of the following is true about myelin?

    <p>It increases conduction speed</p> Signup and view all the answers

    Which of the following is true about grey matter?

    <p>It is nervous tissue without myelin</p> Signup and view all the answers

    Which of the following is true about white matter?

    <p>It includes nerve cell bodies and myelinated nerve fibers</p> Signup and view all the answers

    Which of the following is true about the autonomic nervous system?

    <p>It is responsible for the fight or flight response</p> Signup and view all the answers

    Which of the following is true about the somatic efferent division?

    <p>It is responsible for involuntary control of body functions</p> Signup and view all the answers

    Which of the following is true about the sensory subdivision of the peripheral nervous system?

    <p>It contains cell bodies in the gray matter of the central nervous system</p> Signup and view all the answers

    Which of the following accurately describes the components of the Peripheral Nervous System (PNS)?

    <p>The PNS includes nerves, cell types, their morphology, ganglia, and their function.</p> Signup and view all the answers

    What are the parts of a spinal nerve?

    <p>Cell bodies, axons, and dendrites.</p> Signup and view all the answers

    What is the purpose of a nerve plexus?

    <p>To combine and distribute nerve fibers from multiple spinal nerves.</p> Signup and view all the answers

    What is the difference between sensory and motor functions in the nervous system?

    <p>Sensory functions are involuntary, while motor functions are voluntary.</p> Signup and view all the answers

    What is myelin and what cells produce it?

    <p>Myelin is a fatty substance and is produced by oligodendrocytes and Schwann cells.</p> Signup and view all the answers

    What is the difference between white and grey matter?

    <p>White matter contains axons, while grey matter contains cell bodies.</p> Signup and view all the answers

    Which part of the nervous system is responsible for the involuntary control of smooth and cardiac muscles, as well as glands?

    <p>Sympathetic Nervous System (SNS)</p> Signup and view all the answers

    Which part of the nervous system is responsible for voluntary control of striated/skeletal muscles?

    <p>Somatic Efferent Nervous System</p> Signup and view all the answers

    Where are the nerve cell bodies of the parasympathetic post-ganglionic neurons located?

    <p>In the terminal ganglia on the structures innervated</p> Signup and view all the answers

    Which part of the nervous system is responsible for the 'rest and digest' response?

    <p>Parasympathetic Nervous System (PsNS)</p> Signup and view all the answers

    Which part of the nervous system is responsible for the 'fight or flight' response?

    <p>Sympathetic Nervous System (SNS)</p> Signup and view all the answers

    What is the function of the vagus nerves in the autonomic control of the heart?

    <p>Slow down the heart</p> Signup and view all the answers

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