A manual of diseases of the nervous system . ^. 568 SPINAL CORD. missure lias been formed. In Fig. 175, for instance, we Lave acentral cavity, but in the commissure in front of tbis is a mass ofnuclei baving tbe usual aspect of an obliterated canal.* Tlie cavityis surrounded by a zone of tissue, wbicb in a and b sends off a fringeof processes, especially backwards. This tissue is increased in thelower part of tbe cervical region (c). In b, a small cavity is formedbetween the tissue and the grey matter by breaking down, and in canother exists in the middle line behind the growth, probably due t
A manual of diseases of the nervous system . ^. 568 SPINAL CORD. missure lias been formed. In Fig. 175, for instance, we Lave acentral cavity, but in the commissure in front of tbis is a mass ofnuclei baving tbe usual aspect of an obliterated canal.* Tlie cavityis surrounded by a zone of tissue, wbicb in a and b sends off a fringeof processes, especially backwards. This tissue is increased in thelower part of tbe cervical region (c). In b, a small cavity is formedbetween the tissue and the grey matter by breaking down, and in canother exists in the middle line behind the growth, probably due todeficient closure of the original fissure, and increased by a destructiveprocess. Still lower, the commissure resumes its normal appearance,but the collection of nuclei in the position of the canal is unusuallylarge (d). In tbe lumbar region, the canal is patent (e). Thedegeneration of the posterior median column and of the lateralcolumns is secondary. We have seen that in the congenital cases we must recognisea process of growth of the persi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnervoussystem, bookye
