A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . Fig. 86.3.—Two Motor Neurones from the Ventral Horn ofthe Thoracic Spinal Cord of a Rabbit, Fifteen Days after cuttingthe Major Sacro-Sciatic Xerve, to Illustrate the Chromatolysis ofthe Xissl Substance During the Axonal Degeneration. .4,Cell in which the chromophilic bodies are partially disintegrated(at 6) and the nucleus eccentric; B, cell showing more advancedchromatolysis (c), the chromophilic substance being present onlyin the dendrites and around the nucleus
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A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . Fig. 86.3.—Two Motor Neurones from the Ventral Horn ofthe Thoracic Spinal Cord of a Rabbit, Fifteen Days after cuttingthe Major Sacro-Sciatic Xerve, to Illustrate the Chromatolysis ofthe Xissl Substance During the Axonal Degeneration. .4, Cell in which the chromophilic bodies are partially disintegrated(at 6) and the nucleus eccentric; B, cell showing more advancedchromatolysis (c), the chromophilic substance being present onlyin the dendrites and around the nucleus in the form of a homo-geneous mass; a, axone. (After Strong, from Baileys Histologj.) nective tissue and other non-nervous cells is not clear.The wide-spread belief that the neurofibrils constitutethe essential conducting elements is not universallyaccepted. In the developing embryo the functionalactivity of the nerves precedes the appearance withinthem of any demonstrable neurofibrils. Numerous minute highly refractive granules, canals of various shapes and frequently pigment andother inclusions occur in the cytoplasm in