. A text-book of medicine for students and practitioners . Fig. 201.—Lateral aspect of the brain (from Ecker).The gyri and lobules are in Roman type, the sulci and fissures in Fig. 202.—Lateral asiKct of the I)r:nn (after Ecker). TIic motor rojiion of the cortex, consistingof the anterior central convolution, well as of the paracentral lobule shown in Fig. 203, uudpossjbly also the posterior central gyrus, is shaded, 472 DISEASES OF THE NERVOUS SYSTEM central convolution also probably belongs in part to the motor zone; its im-portance, however, is undoubtedly very much less than

---

. A text-book of medicine for students and practitioners . Fig. 201.—Lateral aspect of the brain (from Ecker).The gyri and lobules are in Roman type, the sulci and fissures in Fig. 202.—Lateral asiKct of the I)r:nn (after Ecker). TIic motor rojiion of the cortex, consistingof the anterior central convolution, well as of the paracentral lobule shown in Fig. 203, uudpossjbly also the posterior central gyrus, is shaded, 472 DISEASES OF THE NERVOUS SYSTEM central convolution also probably belongs in part to the motor zone; its im-portance, however, is undoubtedly very much less than that of the anterioricntral convolution. The entire motor cortical region is also anatomicallydillerent from the other regions of the cortex, as Betz was the first to pointout, for it alone possesses certain large pyramidal ganglion cells. These cellsmust certainly be regarded as the same motor-ganglion cells from which thefibers ol the pyramidal tract arise {vide supra, page 194). However exten-sive the destructive processes which attack other parts of the surface of thebrain, ])rovided the} do not involve these particular motor convolutions, theycause no paralytic symptoms;

---

Size: 1796px × 1392px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, bookidtextbookofme, bookyear1912