A treatise on nervous diseases; their symptoms and treatment . ind the posterior corpus quadrigeminum, decus-sates in the valve, curves around the aqueduct of Syl-vius, and enters its nucleus, which is situated just be-hind (below) the nucleus of the third nerve in relativelythe same position. Both the third and fourth nerves receive a few fibers,ascending from the sixth nerve, from the posterior lon-gitudinal fasciculi, which do not enter their nuclei. The nucleus of the third nerve receives fibers fromthe anterior corpus quadrigeminum, and probably simi-lar fibers pass to the nuclei of the f
A treatise on nervous diseases; their symptoms and treatment . ind the posterior corpus quadrigeminum, decus-sates in the valve, curves around the aqueduct of Syl-vius, and enters its nucleus, which is situated just be-hind (below) the nucleus of the third nerve in relativelythe same position. Both the third and fourth nerves receive a few fibers,ascending from the sixth nerve, from the posterior lon-gitudinal fasciculi, which do not enter their nuclei. The nucleus of the third nerve receives fibers fromthe anterior corpus quadrigeminum, and probably simi-lar fibers pass to the nuclei of the fourth and sixthnerves. ANATOMY. 29 The sixth, and seventh nerves are closely connectedat one point in their course. The sixth enters the an-terior aspect of the pons just at its junction with themedulla oblongata not far from the median line. Itcrosses the pons, changing its direction several times sothat no one section can follow its whole course, andenters its nucleus just external to the eminentia teresnear the median raphe on the floor of the fourth ven-. FiG. 11 represents sections through the pons, so as to show on the left theseventh and sixth nerves, with their nuclei; on the right, the sixth andeighth nerves, half schematic. vn, seventh nerve ; vn, eminentia teres, where the seventh nerve turns down-ward ; vn, the proper nucleus of the seventh nerve; vi, sixth nerve; vi, thecommon nucleus of sixth and seventh ; vin, eighth nerve ; vm, its nucleus ; v,ascending root of the fifth nerve; r, restiform hody ; so, the superior olive; p, thepeduncular fibers. tricle. This nucleus is also the origin of some of thefibers going to the seventh nerve, which enters the ponsjust anterior (forward) to the eighth, crosses diagonallyin a gentle curve to this nucleus, from which it receivessome fibers; then it can be followed to the eminentiateres, where it turns downward ; it soon turns again topass forward and outward, slightly downward, to its in-ferior nucleus. The fibers, in passin
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectnervoussystem, bookye
