Nociception Transmission Process
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Questions and Answers

What is the first step of nociception?

  • Transmission
  • Conduction
  • Transduction (correct)
  • Modulation
  • Where does transmission of neural activation begin in the nociception process?

  • Peripheral nerves
  • Dorsal horn of the spinal cord (correct)
  • Brainstem
  • Thalamus
  • Which type of fibers are associated with the gray matter laminae in the dorsal horn of the spinal cord?

  • Motor fibers
  • A beta fibers (correct)
  • Gamma fibers
  • B fibers
  • What is the role of interneurons in the nociception process?

    <p>Modulating sensory input</p> Signup and view all the answers

    Where do 2nd order neurons project their input in the nociception process?

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

    What is the function of REXED LAMINAE in the nociception process?

    <p>Mediating synapses between 1st and 2nd order neurons</p> Signup and view all the answers

    Which part of the nervous system is responsible for sensory modulation and descending inhibition in the nociception process?

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

    Which lamina receives presynaptic terminals from A beta neurons?

    <p>Lamina 4</p> Signup and view all the answers

    Where do second-order neurons associated with nociception direct information from first-order neurons?

    <p>Along the spinal cord as part of the spinothalamic tract</p> Signup and view all the answers

    Which neurotransmitter is primarily released by first-order C fibers at the synapse junction?

    <p>Substance P</p> Signup and view all the answers

    What is the primary function of lamina 2, also known as substantia gelatinosa?

    <p>Mediates sensory information on slow noxious stimuli</p> Signup and view all the answers

    Which ascending pathway carries both noxious and non-noxious information from A beta, A delta, and C-Fibers from the periphery to the thalamus?

    <p>Neospinothalamic Tract</p> Signup and view all the answers

    Which tract is considered the youngest in terms of biological evolution within the spinothalamic tracts?

    <p>Neospinothalamic Tract</p> Signup and view all the answers

    What is the primary role of the spinoreticular and spinomesencephalic tracts?

    <p>Regulate autonomic responses to nociception</p> Signup and view all the answers

    What is the umbrella architectural categorization of sensory pathways that ascend from the spinal cord to the brain?

    <p>Anterolateral System</p> Signup and view all the answers

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