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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...cortex--i. e., the cells of the brain in which the highest order of nervous impulses find their origin. The small spindle-shaped cells, with their peculiar neurites, are extremely abundant and fill the molecular layer with a mass of interwoven filaments. The second and third layers of the cerebral gray matter are characterized by the presence of pyramidal nervecells of various sizes, the smaller being relatively more abundant in the second layer and the larger in the third layer. From the apex of the pyramidal cell a stout, "primordial " dendrite passes vertically into the molecular layer, where, as well as during its course to the molecular layer, it gives otf numerous branches, and finally ends in a brush of teledendrites extending to the surface of the gray matter (Fig. 230, A, B). Other and shorter dendrites are given off from the body of the cell, which ramify and end in the second, third, or fourth layer of the gray matter. The neurites from the bases of the pyramidal cells pass vertically downward into the white substance, where they may bifurcate, giving axis-cylinders to two nerve-fibres. While within Vertical section of the cerebral cortex, showing its layers. (R. y Cajal.) 1, molecular layer; f, layer of the small pyramidal cells; S, layer of the Iarite pyramidal cells; '., layer of polymorphic cells; 5, white matter. Cells of the moleoular layer of the cerebral cortex. (R. y Cajal.) A, C, small spindle-shaped cells; B, small stellate cell; D, large stellate cull. The branches marked c are neurites. Fig. 230--Diagrammatic section through the cerebral cortex. (R. y faial.) A, sinall pyramidal cell in the second layer: B, two large pyramidal cells in the third layer; C, D, polymorphic cells in the fourth layer: E, centripetal...
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Product details

  • Paperback | 136 pages
  • 189 x 246 x 7mm | 254g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236533356
  • 9781236533357