Nociceptors and Pain Pathways
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Questions and Answers

What type of nerve endings are responsible for detecting pain stimuli?

  • Free nerve endings (correct)
  • Sensory nerve endings
  • Motor nerve endings
  • Autonomic nerve endings
  • What is the role of ion channels in nociceptor terminals?

  • To depolarize the neurons (correct)
  • To hyperpolarize the neurons
  • To inhibit neural transmission
  • To enhance synaptic plasticity
  • What is the effect of local anaesthetics on nociceptors?

  • They block nociceptor activity (correct)
  • They enhance nociceptive transmission
  • They stimulate neural regeneration
  • They have no effect on nociceptors
  • What is the function of nociceptors in the skin?

    <p>To detect pain stimuli</p> Signup and view all the answers

    What type of stimuli can activate ion channels on nociceptor terminals?

    <p>Many different types of stimuli</p> Signup and view all the answers

    Where are nociceptors typically found?

    <p>In the skin</p> Signup and view all the answers

    What is the purpose of ion channels on nociceptor terminals?

    <p>To transmit pain signals</p> Signup and view all the answers

    What happens when local anaesthetics are applied to nociceptors?

    <p>They block pain impulses</p> Signup and view all the answers

    What type of neurons are activated by various stimuli?

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

    What is the result of depolarization of nociceptor neurons?

    <p>Nociceptive impulses along pain pathways</p> Signup and view all the answers

    Study Notes

    Nociceptors

    • Nociceptors are free nerve endings in the skin
    • Nociceptor terminals contain ion channels that can be activated by various stimuli
    • Activation of these ion channels acts as molecular transducers, depolarizing the neurons
    • Depolarization of neurons triggers nociceptive impulses along the pain pathways
    • Local anaesthetics, such as lidocaine, can block nociceptor activation

    Nociceptors

    • Nociceptors are free nerve endings in the skin
    • Nociceptor terminals contain ion channels that can be activated by various stimuli
    • Activation of these ion channels acts as molecular transducers, depolarizing the neurons
    • Depolarization of neurons triggers nociceptive impulses along the pain pathways
    • Local anaesthetics, such as lidocaine, can block nociceptor activation

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    Description

    This quiz covers the structure and function of nociceptors, including their activation, ion channels, and role in pain pathways. Learn about how local anaesthetics block nociceptors and more.

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