Nonmedullated

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Nonmedullated \Non*med"ul*la`ted\, a.
     Not medullated; Specifically: (Anat.) without a medulla or
     marrow, or without a medullary sheath; as, a nonmedullated
     nerve fiber.
     [1913 Webster]



From The Collaborative International Dictionary of English v.0.48 [gcide]:

  nerve \nerve\ (n[~e]rv), n. [OE. nerfe, F. nerf, L. nervus, akin
     to Gr. ney^ron sinew, nerve; cf. neyra` string, bowstring;
     perh. akin to E. needle. Cf. {Neuralgia}.]
     1. (Anat.) One of the whitish and elastic bundles of fibers,
        with the accompanying tissues, which transmit nervous
        impulses between nerve centers and various parts of the
        animal body.
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     Note: An ordinary nerve is made up of several bundles of
           nerve fibers, each bundle inclosed in a special sheath
           (the perineurium) and all bound together in a
           connective tissue sheath and framework (the epineurium)
           containing blood vessels and lymphatics.
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     2. A sinew or a tendon. --Pope.
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     3. Physical force or steadiness; muscular power and control;
        constitutional vigor.
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              he led me on to mightiest deeds,
              Above the nerve of mortal arm.        --Milton.
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     4. Steadiness and firmness of mind; self-command in personal
        danger, or under suffering; unshaken courage and
        endurance; coolness; pluck; resolution.
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     5. Audacity; assurance. [Slang]
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     6. (Bot.) One of the principal fibrovascular bundles or ribs
        of a leaf, especially when these extend straight from the
        base or the midrib of the leaf.
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     7. (Zool.) One of the nervures, or veins, in the wings of
        insects.
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     {Nerve cell} (Anat.), a neuron, one of the nucleated cells
        with which nerve fibers are connected; a {ganglion cell}
        is one type of nerve cell.
  
     {Nerve fiber} (Anat.), one of the fibers of which nerves are
        made up. These fibers are either {medullated} or
        {nonmedullated}. In both kinds the essential part is the
        translucent threadlike axis cylinder which is continuous
        the whole length of the fiber.
  
     {Nerve stretching} (Med.), the operation of stretching a
        nerve in order to remedy diseases such as tetanus, which
        are supposed to be influenced by the condition of the
        nerve or its connections.
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