Types of Receptors and Medical Scans Quiz
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Questions and Answers

What enzyme catalyzes the cleavage of cAMP to AMP?

  • Phosphodiesterase (correct)
  • Myelin Sheaths
  • NMDA receptors
  • Protein Kinase A
  • Which feedback loop occurs when a later part of the pathway stimulates an earlier part of the same pathway?

  • Resting Membrane Potential loop
  • Negative feedback loop
  • Positive feedback loop (correct)
  • All or None Phenomenon loop
  • At what voltage does the resting membrane potential typically stay at?

  • +30mV
  • -70mV (correct)
  • -90mV
  • -55mV
  • What phenomenon occurs when excitatory impulses add together to reach the threshold to fire a neuron?

    <p>Summation of impulse</p> Signup and view all the answers

    Which receptors are glutamate-responsive ion channels that promote action potential formation upon activation?

    <p>NMDA receptors</p> Signup and view all the answers

    What occurs when a later part of a pathway inhibits an earlier part to help maintain homeostasis?

    <p>Negative feedback loop</p> Signup and view all the answers

    Which substance allows the action potential to take on a salutary conduction?

    <p>Myelin Sheaths</p> Signup and view all the answers

    When does temporal summation occur?

    <p>When excitatory impulses add together in close temporal succession</p> Signup and view all the answers

    What does the all or none phenomenon refer to in neuron physiology?

    <p>Threshold and suprathreshold stimulation producing the same magnitude of action potential</p> Signup and view all the answers

    Which phenomenon describes the effects of impulses summing up at different locations on one neuron?

    <p>Spatial summation</p> Signup and view all the answers

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