A&P Lab, Final Exam, Exercise 25

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trulyabaker
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55156
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A&P Lab, Final Exam, Exercise 25
Updated:
2010-12-11 23:27:33
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Lab FinalExam Exercise25
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Questions to know from this module...
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  1. Describe:

    Astrocyte
    star-shaped neuroglia between neurons and blood vessels
  2. Describe:

    Axon
    nerve fiber arising from a slight elevation of the cell body that conducts an impulse away from the cell body
  3. Describe:

    Chromatophilic substance (Nissl bodies)
    corresponds to rough endoplasmic reticulum in other cells
  4. Describe:

    Collateral
    branch of axon
  5. Describe:

    Dendrite
    neuron process with many branches that conducts an impulse toward the cell body
  6. Describe:

    Myelin sheath
    substance of the Schwann cell composed of lipoprotein that insulates axons and increases impulse speed
  7. Describe:

    Neurilemma
    sheath of Schwann cell containing cytoplasm and nucleus that encloses myelin
  8. Describe:

    Neurofibrils
    network of fine threads extending into nerve fiber
  9. Describe:

    Effector
    structure capable of responding to motor impulse
  10. Describe:

    Ependymal cell
    cells that cover the inside spaces of the brain ventricles and help regulate cerebrospinal fluid
  11. Describe:

    ganglion
    specialized mass of neuron cell bodies outside the brain or spinal cord
  12. Describe:

    Interneuron
    transmits impulse from sensory to motor neuron with the CNS
  13. Describe:

    Microglia
    phagocytic neuroglia
  14. Describe:

    Motor (efferent) neuron
    transmits impulse out of the brain or spinal cord to effectors (muscles or glands)
  15. Describe:

    Oligodendrocyte
    myelin-forming neuroglia in brain and spinal cord
  16. Describe:

    Sensory (afferent) neuron
    transmits impulse into brain or spinal cord from receptors

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