A&P Ch 12 and 13 review sheet points

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toribloom
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A&P Ch 12 and 13 review sheet points
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2012-11-05 18:27:43
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  1. What are the 3 functions of the nervous system?
    • Sensory input- monitoring stimuli inside and outside the body
    • Integration- interpretation of sensory input
    • Motor output- response to stimuli by activation effector organs.
  2. _____ are branched cells that wrap CNS nerve fibers.

    Microglia
    oligodendrocytes
    astrocytes
    oligodendrocytes
  3. The _________ line the central cavities of the brain and spinal column of the CNS. Produce CSF and have cilia that help with the flow of CSF.
    Microglia
    astrocytes
    ependymal cells
    Ependymal cells
  4. The _________  of the CNS are small, ovoid cells with spiny processes that function as Phagocytes that monitor the health of neurons.
    Astrocytes
    Schwann cells
    microglia
    microglia
  5. _____ are the most abundant, versatile, and highly branched glial cells. The scaffolding of the CNS.

    Satellite cells
    astrocytes
    microglia
    astrocytes
  6. ____ cells of the CNS, anchor neurons to nutrient supplies, control chemical environment, and guide migration of young neurons.
    microglia
    astrocytes
    schwann cells
    astrocytes
  7. _______ replaces damaged neurons with scar tissue or sclerosis. These cells are part of the CNS

    astrocytosis
    neurilemma
    astrocytosis
  8. What 2 cells are part of the PNS?
    Schwann cells
    astrocytes
    microglia
    satellite cells
    ependymal
    • Schwann cells
    • Satellite cells
  9. The _____ cells of the PNS surrounds nerve fibers, they make up the Myelin Sheath.

    microglia
    schwann
    satellite
    schwann
  10. ______ cells surround neuron cell bodies in ganglia in PNS.

    Satellite
    astrocyte
    schwann
    satellite
  11. The 2 functions of the PNS (peripheral Nervous System) are ______ and _____ divisions.
    • sensory
    • Motor
  12. Sensory is afferent/efferent?
    afferent
  13. Is Motor afferent/efferent?
    efferent
  14. ____ pathway carries impulses from the peripherals to the brain.
    afferent
  15. _____ pathway transmits impulses from the CNS to effector organs.
    efferent
  16. What are the neurons that carry the signals through the CNS?
    sensory
    interneurons
    motor
    interneurons
  17. The ____ and _____ ____ are the parts of the CNS.
    • brain
    • spinal cord
  18. The parts of the CNS are paired ____ and _____ nerves.
    • spinal
    • cranial
  19. _________ cells include astrocytes, oligodendrocytes, and schwann and others, provide support, insulate, promote health and growth and help guide young neurons.
    neuroglia or glial cells
  20. The neuron is composed of what 3 parts?
    • body (soma)
    • axon
    • dendrites
  21. The _____ contains the nucleus and nucleolus.
    body
    axon
    dendrites
    body (soma)
  22. Which is not a characteristic of neurons? 
     a. They are amitotic  
    b. They require a continuous supply of oxygen  
    c. They have a fast metabolic rate  
    d. They normally live for only a few days
    d. They normally live for only a few days
  23. The Soma does not have centrioles.
    true/false
    true
  24. The ________ is the receptive, input region of the neuron.
    dendrites
  25. "nerve fiber" refers to the _____ of a neuron.
    axon
  26. The axon hillocks are cone-shaped areas from which axons arise.
    true/false
    true
  27. The processes of the CNS are called _____ and the processes of the PNS are called _____.

    nerves
    tracts
    • tracts
    • nerves
  28. _____ are short, tapering and diffusely branched processess, they are the receptive, or input regions of the neurons.
    dendrites
  29. Where are interneurons located and what are their function?
    In the CNS, shuttle information between Sensory and Motor neurons.
  30. Schwann cells make up the _____ _____.
    Myelin sheath
  31. The remaining nucleus and cytoplasm of a schwann cell is the ______.
    myelin sheath
    neurilemma
    soma
    neurilemma
  32. ______ of the neuron's membrane: Sodium is on the outside, and potassium is on the inside.
    polarization
  33. ______ ______ gives the neuron a break.
    resting potential
  34. _____ _____ is when Sodium ions move inside the membrane.
    action potential
  35. _________ is when Potassium ions move outside, and sodium ions stay inside the membrane.
    repolarization
  36. _________ is when more potassium ions are on the outside than there are sodium ions on the inside.
    hyperpolarization

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