The anatomy of the nervous system, from the standpoint of development and function . ig. 193). The posterior limb of the internal capsule intervenes between the thalamusand the lentiform nucleus, and bends around the posterior end of the latteron to its ventral surface (Fig. 194). It accordingly consists of three parts,designated as lenticulothalamic. retrolenticular, and sublenticular. The lentic-ulothalamic part consists of fibers belonging to the thalamic radiation intermingledwith others representing the great efferent tracts which descend from the cere- 260 THE NERVOUS SYSTEM bra! cortex
The anatomy of the nervous system, from the standpoint of development and function . ig. 193). The posterior limb of the internal capsule intervenes between the thalamusand the lentiform nucleus, and bends around the posterior end of the latteron to its ventral surface (Fig. 194). It accordingly consists of three parts,designated as lenticulothalamic. retrolenticular, and sublenticular. The lentic-ulothalamic part consists of fibers belonging to the thalamic radiation intermingledwith others representing the great efferent tracts which descend from the cere- 260 THE NERVOUS SYSTEM bra! cortex (Fig. 193). Of these, the corticobulbar tract to the motor nuclei ofthe cranial nerves occupies the genu, and the corticospinal tract the adjacentportion of the posterior limb. The fibers of the corticospinal tract are so ar- ^ - - Caudate nucleus Frontopontine tractinterior thalamic radiation iCorticobulbar tract ^Globus pallidas ? -Corticorubral tract?Corticospinal trad (arm)?Corticospinal tract (leg) ? Pulamcn ? Thalamic radiation (sensory fibers) Auditor \ radiation. Thalamus Optic radiationFig. 193.—Diagram of the internal capsule. ranged that those for the innervation of the arm are nearer the genu than thosefor the leg. Accompanying the corticospinal tract are descending fibers fromthe cortex of the frontal lobe to the red nucleus, the corticorubral tract. Those Coronal fibers from anteriorlimb of internal capsule ^ Lent/form nucleus
Size: 1287px × 1941px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectnervoussystem, bookye
