A manual of diseases of the nervous system . 164 SPINAL CORD. posterior root pass through it. The rest of the white substance isdivided, in the middle line in front, by the anterior median fissure, . -BOOlS. Fia. 64.—Diagram of a section of the spinal cord in the cervical region. A. C,anterior commissure; P. c, posterior commissure; i. g. s., intermediate grey sub-stance ; p. cor., posterior cornu; c. c. p., caput cornu posterioris; i. L, i., laterallimiting layer; ;. A. T., antero-lateral ascending tract, which extends along theperiphery of the cord. down which the pia mater and blood-ves
A manual of diseases of the nervous system . 164 SPINAL CORD. posterior root pass through it. The rest of the white substance isdivided, in the middle line in front, by the anterior median fissure, . -BOOlS. Fia. 64.—Diagram of a section of the spinal cord in the cervical region. A. C,anterior commissure; P. c, posterior commissure; i. g. s., intermediate grey sub-stance ; p. cor., posterior cornu; c. c. p., caput cornu posterioris; i. L, i., laterallimiting layer; ;. A. T., antero-lateral ascending tract, which extends along theperiphery of the cord. down which the pia mater and blood-vessels pass, and at the bottomof which is the anterior or white commissure. Between the anteriormedian fissure and the posterior cornu the white substance is con-tinuous and undivided, extending round the front and side of thecord. It is artificially divided into an anterior and a lateral column,the line of division being the outermost of the anterior nerve-roots,which pass through the front of the cord; but there is no correspond-ing distinction of structure, and hence it is often termed the antero-lateral column. The white substance varies in amount in different parts of thecord, but, as a whole, l
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