Diseases of the nervous system : a text-book of neurology and psychiatry . pons fibers (Superficial pes lemniscus. Fasciculusong posticus t pyramidal fibersXI, ClI-IV aberrant medullary fibersHomolateral pyramidal fibers XII, XI, CII-IV crossedcortical nuclear fibers Crossed pyramidaltract nuclei, the facial, to serve the important functions of lateral movements of the head,eyes, and trunk for maintaining the static equilibrium of the body. (See Plate VIII.) Pyramidal Tract.—The corticospinal portion (CoM) of the pyramidal tract (pink)takes its origin in the ascending frontal convolutions (Fa)

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Diseases of the nervous system : a text-book of neurology and psychiatry . pons fibers (Superficial pes lemniscus. Fasciculusong posticus t pyramidal fibersXI, ClI-IV aberrant medullary fibersHomolateral pyramidal fibers XII, XI, CII-IV crossedcortical nuclear fibers Crossed pyramidaltract nuclei, the facial, to serve the important functions of lateral movements of the head,eyes, and trunk for maintaining the static equilibrium of the body. (See Plate VIII.) Pyramidal Tract.—The corticospinal portion (CoM) of the pyramidal tract (pink)takes its origin in the ascending frontal convolutions (Fa), descends in the posteriorsegment of the internal capsule (Cip) and in the anterior portion of the cerebral corticonuclear (CON) portion (red) arises from the Rolandic operculum (OpR)at the foot of the ascending frontal convolution and the second frontal, descends throughthe knee (Cig) of the internal capsule and along the lenticular border of the posteriorlimb of the internal capsule (Cip) then to the cerebral peduncle, where it divides. Oneportion of the corticonuclear contingent follows the

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