Neurology exam 1

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Author:
morgan1027
ID:
261092
Filename:
Neurology exam 1
Updated:
2014-02-09 20:28:27
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Neurology
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Neurology
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  1. The name for the idea that ions want to be equally distributed on both sides of the plasma membrane
    Principle of Equilibrium
  2. What is the resting potential inside the cell?
    -60 mV
  3. What is the resting potential outside of the cell?
    0 mV
  4. How does the cell maintain resting potential when K+ wants to flow out and Na+ wants to flow in?
    The cell has a pump to take 3 Na ions out for every 2 K ions in.
  5. When Na+ rushes into the cell, influx of positive ions causes electrical potential to rise from -60 to +40 mV
    Depolarization
  6. Depolarization also triggers K+ and CI- channels to be opened. K+ rushes out while CI- rushes in.  Electrical potential is decreased from 40 mV to -70 mV
    hyperpolarization
  7. Post action potential hyperpolarized state where the neuron cannot fire another action potential
    Refractory Period
  8. Axons and dendrites form _________ to communicate electrochemically with one another
    Synapses
  9. First cell sending information to another cell
    pre-synaptic cell
  10. Cell that receives information from another cell
    post-synaptic cell
  11. what is the conduction velocity for a large myelinated neuron?
    72-120 m/sec
  12. What is the conduction velocity of a small neuron?
    0.4-2 m/sec
  13. Gustatory cells are located where?
    tongue
  14. What items are included in a full nerve unit in the PNS?
    myelinated fibers, unmyelinated fibers, glial cells, nerve covering material
  15. Network of interconnected peripheral nerves
    nerve plexus
  16. removal of tissue/cells from extracellular area
    phagocytosis
  17. segmented muscle tissue used for fast movements
    skeletal muscle
  18. What is included in the Central Nervous System?
    Brain and Spinal Cord

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