The development of the human body; a manual of human embryology . Ah Fig. 260. — DiagrammaticLongitudinal Sectionof the Optic Cup andStalk passing throughthe Chorioid Fissure. Ah, Hyaloid artery; L, lens;On, fibers of the opticnerve; Os, optic stalk; PI,pigment layer, and R, retinal layer of the retina. THE OPTIC NERVE. 491 clearly in those of 9 mm. (Fig. 261, A). Later, as thefibers become more numerous, they gradually invade thelateral and finally the dorsal walls of the stalk, and, at thesame time the mantle cells of the stalk become more scat-tered and assume the form of connective-tissue
The development of the human body; a manual of human embryology . Ah Fig. 260. — DiagrammaticLongitudinal Sectionof the Optic Cup andStalk passing throughthe Chorioid Fissure. Ah, Hyaloid artery; L, lens;On, fibers of the opticnerve; Os, optic stalk; PI,pigment layer, and R, retinal layer of the retina. THE OPTIC NERVE. 491 clearly in those of 9 mm. (Fig. 261, A). Later, as thefibers become more numerous, they gradually invade thelateral and finally the dorsal walls of the stalk, and, at thesame time the mantle cells of the stalk become more scat-tered and assume the form of connective-tissue (neurog-lia) cells, while the original cavity of the stalk is gradu-ally obliterated (Fig. 261, B). Finally, the stalk becomesa solid mass of nerve-fibers, among which the alteredmantle cells are scattered. /.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902
