. A manual of diseases of the nervous system. Pia. 78.—Degeuerations after a lesion of the cord in the lower part of the cervicalredon. A, highest cervical; B, middle cervical li cm. ahove lesion. Degtnerationof^the posterior median columns, spreading slightly in A and widely in b into the})0st. ext. col. The nature of the circumferential degeneration is uncertain; itIS probably a partial ascending degeneration set up by peripheral myelitis. C, upper dorsal 2 cm. below lesion. Degeneration of the lateral pyramidal tracts; comma-shaped degeneration in front of the post. ext. col.; slight degene
. A manual of diseases of the nervous system. Pia. 78.—Degeuerations after a lesion of the cord in the lower part of the cervicalredon. A, highest cervical; B, middle cervical li cm. ahove lesion. Degtnerationof^the posterior median columns, spreading slightly in A and widely in b into the})0st. ext. col. The nature of the circumferential degeneration is uncertain; itIS probably a partial ascending degeneration set up by peripheral myelitis. C, upper dorsal 2 cm. below lesion. Degeneration of the lateral pyramidal tracts; comma-shaped degeneration in front of the post. ext. col.; slight degenera-tion of the anterior ground-fibres. (Schultze.) FlO-. 79.—Ascending degeneration after injury to the lowest part of the spinalcord and sciatic nerve-roots arising from it. A, cervical; B, lower dorsal j c, junctionof dorsal and lumbar regions ; d, middle of lumbar enlargement. (After Schultze.) between these degenerated columns and the undegenerated externalcolumns through the greater part of the cord above the lesion (Fig. 76)is very
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