. Elements of histology. Histology. Spinal Cord. 179. This part is connected directly witli the median bundle of the posterior nerve roots, or rather by the numerous collaterals passing off from the posterior root fibres. (y') Tiie median division of the posterior column is called the J'ascicidus or tract of Goil. (g) The tract or fasciculus of Lissauer (Fig. 125) is a small mass of white fibres situated between the outer su- perficial portion of the tract of Burdach and of the direct cerebellar tract, and close to the posterior lateral fis- sure. In addition to these, a narrow mass of fibres
. Elements of histology. Histology. Spinal Cord. 179. This part is connected directly witli the median bundle of the posterior nerve roots, or rather by the numerous collaterals passing off from the posterior root fibres. (y') Tiie median division of the posterior column is called the J'ascicidus or tract of Goil. (g) The tract or fasciculus of Lissauer (Fig. 125) is a small mass of white fibres situated between the outer su- perficial portion of the tract of Burdach and of the direct cerebellar tract, and close to the posterior lateral fis- sure. In addition to these, a narrow mass of fibres in the depth of the tract of Bur- dach, near the grey commissure, represents a separate group, called the comma-shaped tract: and the superficial mass of white matter in the anterior half of the lateral column, which is called the anterolateral ascending tract of Gotcers {see Fig. 124). These various divisions can be traced from the meduUata oblongata into the cervical, and more or less into the dorsal part of the cord ; but farther down many of them, like the direct cerebellar tract and the tract of Goll, are lost as separate tracts, except the crossed pyramidal fasciculus. Experiments have been made which demonstrate that these different tracts are physiologically of very different character. According to a well-established law—the AVallerian law—each nerve fibre has its Fig. 12(3.—From a transverse section "through a most peripheral part of the White Matter of the Cord. {Atla^.) c. Special peripheral collection of neu- roglia ; w, white matter with the medul- lated nerve fibres shown in cross section, and nenroglia between Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Klein, E. (Edward), 1844-1925; Edkins, John Sydney, b. 1865. Philadelphia : Lea Brothers
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