it14spr201.20Bc8t1-10.txt

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JJLT
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261302
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it14spr201.20Bc8t1-10.txt
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2014-02-10 17:46:28
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Neurophysiology Sections 1-10
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  1. ´╗┐Integrates information from sensory and motor areas and can direct voluntary behaviors.
    Integration
  2. Directs skeletal muscle movement.
    Motor
  3. Receives sensory input and translates it into perception (awareness).
    Sensory
  4. Communicates instructions from CNS that control viscera (heart and various organs) and causes involuntary subconscious actions.
    Autonomic Nervous System
  5. Consists of brain and spinal cord (one of two branches of the nervous system).
    Central Nervous System
  6. A branch of the peripheral nervous system consisting of the somatic and autonomic branches.
    Motor Division
  7. Consists of the sensory and motor divisions (one of the two branches of the nervous system).
    Peripheral Nervous System
  8. The branch of the PNS that controls sensory receptors.
    Sensory Division
  9. Communicates voluntary (conscious) instructions originating in the CNS to skeletal muscles causing contractions.
    Somatic Nervous System
  10. Found throughout nervous system and brain; greatly outnumber neurons; function includes nourishing neurons and sending/receiving messages.
    Neuroglia Cell
  11. A cell that is specialized to conduct nerve impulses.
    Neuron
  12. Neuroglia cell; provides support and holds structures together with cellular processes; aids metabolism, regulates concentration of ions, and response to brain injury.
    Astrocytes
  13. Form inner lining of central canal that extends downward through spinal cord; form membranes that covers brain ventricles and lines ventricle cavities.
    Ependyma
  14. Helps support neurons and phagocytize bacterial cells and cellular debris.
    Microglia
  15. Produces myelin in brain and spinal cord; can myelinate many axons.
    Oligodendrocytes
  16. Neuroglia cell found in the PNS that encase large axons of peripheral neurons in lipid rich sheaths; produce myelin.
    Schwann Cells
  17. Neuroglia cell in PNS that surround cell bodies of neurons and support ganglia in PNS.
    Satellite Cells
  18. A structure containing a number of nerve cell bodies, typically linked by synapses often forming a swelling on a nerve fiber.
    Ganglion
  19. A bundle of neurons with their connective tissue sheaths, blood vessels, and lymphatics.
    Nerve
  20. Connects one part of the nervous system with another.
    Nerve Tract
  21. Control center of the cell.
    Nucleus
  22. A coating of myelin (in PNS).
    Myelin Sheath
  23. An axon or nerve fiber that is coated with myelin.
    Myelinated
  24. Formed by the parts of the Schwann cell that contain most of the cytoplasm and nuclei that remain outside the myelin sheath.
    Neurilemmal Sheath
  25. An axon or nerve fiber that is not coated with myelin.
    Unmyelinated
  26. Relays information between neurons in brain and spinal cord (multipolar).
    Interneuron
  27. Applies to neurons located in the CNS that project their axons outside the CNS to directly or indirectly control muscles.
    Motor Neuron
  28. Neurons responsible for converting various external stimuli that arise from the environment of an organism producing a corresponding internal stimuli.
    Sensory Neuron
  29. Voltage created by an ion crossing the cell membrane.
    Nernst Equilibrium
  30. Nernst of Sodium (Na+).
    +60mV
  31. Nernst for Potassium (K+).
    -90mV
  32. What is required for Nernst to be reached?
    Unimpeded flow
  33. A mechanism of active transport that moves potassium ions into and sodium ions out of the cell.
    Na/K Pump

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