AP 1 (11-2)

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Author:
mc166589
ID:
119265
Filename:
AP 1 (11-2)
Updated:
2011-11-27 19:50:09
Tags:
neurons
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Description:
AP 1 chapter 11.
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  1. What are the two types of cells of the neuvous system?
    • Neurons
    • Neuroglial Cells
  2. What is the function of neurons?
    Transmit nerve impulses.
  3. What are the functions of neuroglial cells?
    • hold neurons together by filling spaces, supporting neurons, and serving as a framework
    • regulate the environment of the neurons
    • protect neurons
  4. When does the ability for neurons to divide stop?
    About six months after birth.
  5. What is the most common type of cell in neurvous tissue?
    Neuroglial cells
  6. When does the ability for division of neuroglial cells stop?
    Never.
  7. What are the four types of neuroglial cells in the CNS?
    • Astrocytes
    • Oligodendrocytes
    • Microglial cells
    • Ependymal cells
  8. What are the most numerous neuroglial cell type?
    Astrocytes
  9. Which types of neuroglial cells provide most structural support?
    Astrocytes
  10. What type of neuroglial cell regulates components of the tissue fluid of the CNS by forming part of the “blood-brain barrier”?
    Astrocytes
  11. What type of neuroglial cell form myelin along axons in brain and spinal cord but do not form neurilemma?
    Oligodendrocytes
  12. What type of neuroglial cells are phatocytes?
    Microglial cells.
  13. What type of neuroglial cell form epithelial-like membranes in walls of cavities of the brain (= ventricles) and central canal of spinal cord?
    Ependymal cells
  14. What type of neuroglial cell lies next to capillaries, forming choroid plexuses, that form cerebrospinal fluid from the blood?
    Ependymal cells
  15. What are the two types of neuroglial cells in the PNS?
    • Schwann cells
    • Satellite cells
  16. What neuroglial cells forms myelin and neurilemma around axons of neurons of the PNS only?
    Schwann cells
  17. What type of neuroglial cell surround cell bodies of neurons in ganglia?
    Satellite cells
  18. What type of neuroglial cell perform roles similar to that of astrocytes in CNS?
    Satellite cell

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