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Week 5 Quiz

Quiz by Joseph Cicchillo

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7 questions
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  • Q1
    1.
    Question Image
    K+ diffuses out of cell
    Stimulus Hyperpolarizes membrane
    Na+ diffuses out of cell
    Stimulus is applied that brings membrane to threshold
    30s
  • Q2
    2.
    Question Image
    Voltage-gated K+ channels open
    K+ rushes into cell causing hyperpolarization
    Leaky Na+ channels open causing depolarization
    Voltage-gated Na+ channels open causing depolarization
    30s
  • Q3
    3.
    Question Image
    Voltage-gated K+ channels close and voltage-gated Na+ channels open causing Hyperpolarization
    Na+ rushes into cell causing Hyperpolariation
    Voltage-gated Na+ channels close and voltage-gated K+ channels open causing Repolarization
    K+ rushing into cell causing Depolarization
    30s
  • Q4
    4.
    Question Image
    Leaky K+ channels close
    Na+/K+ pump closes
    Voltage-gated K+ channels close, but are sluggish causing Hyperpolarization
    Leaky Na+ channels become inactive
    30s
  • Q5
    5.
    Question Image
    Leak channels close
    Voltage gated Na+ opens to depolarize the cell and bring it to its resting potential
    Membrane potential returns to normal via Na+/K+ pump
    Leak channels open via ATP to restore membrane potential
    30s
  • Q6
    What does the Absolute Refractory Period tell us about the neuron?
    Question Image
    The neuron is ready to send another signal
    The nerve can only be stimulated if the signal is strong enough
    Period of time when a nerve can not be stimulated because it is already sending a signal
    30s
  • Q7
    What does the Relative Refractory Period tell us about the neuron?
    Question Image
    Only an exceptionally strong stimulus can generate an Action Potential
    The neuron cannot be stimulated under any circumstance
    30s

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