Anatomy & Physiology - Nervous System/CNS - Pt. 1

For all you Medical gurus out there (and even Massage Therapists!)
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1
The _______ are nerve cells that conduct impulses, the _______ are the specialized connective tissue cells.
  • Neurons, Dendrites
  • Axons, Dendrites
  • Neurons, Neuroglia
  • Neuroglia, Axons
    • 2
    Put the following cell parts in order of their function (i.e. part, its function, part, its function...)
    • Dendrites
    • Fatty insulator of the Neuroglia
    • Axon
    • Nodes of Ranvier
    • Myelin
    • Help speed the nerve impulses
    • Extensions of the cytoplasm that carry signals to cell body
    • Elongated projection that carries signals away from cell body

    Use your mouse to drag and drop the answers above into the correct order

    3
    Generally, when a neuron is at rest, the outside of its cell membrane is ________ charged with _________, and the inside of the cell membrane is ________ charged with _________.
  • Positively / Sodium, Negatively / Potassium
  • Positively / Potassium, Negatively / Sodium
  • Negatively / Sodium, Positively / Potassium
  • Negatively / Potassium, Positively / Sodium
    • 4
    When a stimulus results in a brief change in the charge of one segment of the neuron, it is called ________________.
  • Excited
  • Membrane Potential
  • Depolarization
  • Inhibited
    • 5
    When the external positive and internal negative differences of the membrane are present, it is called...
  • Optimum Potential
  • Membrane Potential
  • Action Potential
    • 6
    When the outside segment of the membrane becomes negatively charged as it depolarizes and the inside becomes positively charged, it is called ____________.
  • Repolarization
  • Inhibited
  • Excited
  • Action Potential
    • 7
    Repolarization is the process that reverses nerve impulse charges while the previous segment returns to its original polarity.
  • True
  • False
    • 8
    ____________ period is a when a neuron recovers.
  • Refractory
  • Inhibition
  • Stabilization
    • 9
    ___________ are the spaces or junctions between two neurons or a neuron and effector organ, while ____________ are chemical compounds contained within sacs of the end of an axon.
  • Axons, Effectors
  • Synapses, Neurotransmitters
  • Neurons, Nerve cells
    • 10
    Excited is what is used to describe the __________ as it switches charges with the action potential.
  • Neuron
  • Channel
  • Membrane
  • Segment
    • Unanswered questions will be marked as wrong

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