The anatomy of the nervous system : from the standpoint of development and function / by Stephen Walter Ranson.

  • Stephen Walter Ranson
Date:
1939
Catalogue details

Licence: In copyright

Credit: The anatomy of the nervous system : from the standpoint of development and function / by Stephen Walter Ranson. Source: Wellcome Collection.

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    the number of these long ascending branches must increase from below upward it is easy to understand the progressive increase in size of the posterior funiculus from the sacral to the cervical region (Fig. 61). 1 he fasciculus gracilis or column of Goll and fasciculus cuneatus or column of Burdach are composed for the most part of these ascending branches of the dorsal root fibers, the former containing those which have the longest intra¬ medullary course. Fig. 70. Bifurcation of the dorsal root fibers within the spinal cord into ascending and descending branches, which in turn give off collaterals; the termination of some of these col¬ laterals in synaptic relation to cells of the posterior gray column. (Cajal, Edinger.) The descending branches of the fibers of the medial division of the dorsal root are all relatively short. The shortest terminate at once in the gray matter of the posterior column. Others descend in the fasciculus inter]ascicularis, or comma tract of Schultze, which is situated between the fasciculus gracilis and the fasciculus cuneatus; and still others run near the posterior median septum in the septomarginal fasciculus (Figs. 76, 78). In both of these fascicles they are 7
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