Sympathetic Nervous System and Ganglia Organization Quiz
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Questions and Answers

What type of nervous system rapidly sends signals to all organs of the body with just one input?

  • Autonomic nervous system
  • Parasympathetic nervous system
  • Somatic nervous system
  • Sympathetic nervous system (correct)
  • What are the two types of membrane potentials discussed in the text?

  • Active potential and passive potential
  • Static potential and changing potential
  • Resting potential and action potential (correct)
  • On potential and off potential
  • What is used to measure membrane potentials, according to the text?

  • Watts (W)
  • Microvolts (µV)
  • Millivolts (mV) (correct)
  • Kilovolts (kV)
  • What is the significance of the resting potential and action potential in encoding neural signals?

    <p>Essential for encoding information</p> Signup and view all the answers

    What does a neuron's membrane potential depend on, as stated in the passage?

    <p>Signals from other neurons</p> Signup and view all the answers

    What is an analogy used in the text to explain the behavior of resting potential and action potential?

    <p>Light switch</p> Signup and view all the answers

    What is the membrane potential when the charge inside the cell is equal to the charge outside the cell?

    <p>0 mV</p> Signup and view all the answers

    What is the term for the process where the membrane potential becomes more negative due to positive ions leaving the cell?

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

    What is the approximate membrane potential at the peak of the action potential?

    <p>+30 to +40 mV</p> Signup and view all the answers

    What is responsible for the slower resetting of the membrane potential back to rest?

    <p>Sodium-potassium pump</p> Signup and view all the answers

    At what point does the falling membrane potential stop?

    <p>When it reaches -80 mV</p> Signup and view all the answers

    What is the purpose of the sodium-potassium pump during an action potential?

    <p>To maintain the resting potential</p> Signup and view all the answers

    What triggers the action potential in sensory neurons in the retina?

    <p>Light or darkness</p> Signup and view all the answers

    What causes neurons in the inner ear to fire action potentials?

    <p>Sound waves</p> Signup and view all the answers

    What are the two main types of cells in the brain?

    <p>Neurons and glial cells</p> Signup and view all the answers

    What is the function of glial cells in the nervous system?

    <p>They prevent infection and assist in the formation of neural networks</p> Signup and view all the answers

    What is the focus of most of this resource guide?

    <p>The central nervous system</p> Signup and view all the answers

    How does the action potential wave continue in the forward direction only?

    <p>Only the voltage-gated sodium channels in front of the wave can be opened</p> Signup and view all the answers

    What happens when subjects put on the prism goggles initially?

    <p>Subjects throw the balls too far to the right of the target</p> Signup and view all the answers

    How does the cerebellum help with motor control?

    <p>The cerebellum acts as a feedback control system</p> Signup and view all the answers

    Which of the following is a characteristic of memory?

    <p>Memory requires encoding of context</p> Signup and view all the answers

    What happens when patients with cerebellar damage put on prism goggles?

    <p>They never improve their accuracy</p> Signup and view all the answers

    What happens when prism goggles are removed from subjects with normal cerebellar function?

    <p>They throw the balls too far to the right of the target</p> Signup and view all the answers

    What part of the brain contains more than half of its neurons?

    <p>The cerebellum</p> Signup and view all the answers

    What is the primary function of the semicircular canals, utricle, and saccule structures?

    <p>To maintain balance and spatial awareness</p> Signup and view all the answers

    What protects the inner ear structures?

    <p>The labyrinth</p> Signup and view all the answers

    What is the oval window?

    <p>A flexible membrane in the cochlea</p> Signup and view all the answers

    What happens to the liquid pressure wave in the cochlea?

    <p>It travels down the spiral length of the fluid-filled cavities</p> Signup and view all the answers

    How many fluid-filled cavities are inside the cochlea?

    <p>3</p> Signup and view all the answers

    What are the names of the three fluid-filled cavities in the cochlea?

    <p>Scala vestibuli, scala media, and scala tympani</p> Signup and view all the answers

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