The morphology and evolutional significance of the pineal body : being part I of a contribution to the study of the epiphysis cerebri with an interpretation of the morphological, physiological and clinical evidence . Olf Fig. 51 The pineal region in Polyodon folium, according to Garman, , olfactory lobe; Opt., optic nerve; Htn., hemisphere; Po., pineal organ;St., stalk. cells with a generally oval nucleus and two processes, one aslender extension reaching in toward the lumen of the pinealorgan and the other a more diffuse ending, extending towardthe ectal surface of the wall. Scattere
The morphology and evolutional significance of the pineal body : being part I of a contribution to the study of the epiphysis cerebri with an interpretation of the morphological, physiological and clinical evidence . Olf Fig. 51 The pineal region in Polyodon folium, according to Garman, , olfactory lobe; Opt., optic nerve; Htn., hemisphere; Po., pineal organ;St., stalk. cells with a generally oval nucleus and two processes, one aslender extension reaching in toward the lumen of the pinealorgan and the other a more diffuse ending, extending towardthe ectal surface of the wall. Scattered here and there amongthese cells, which are in the majority, are a number of largeelements more distinctly oval in character with a roundednucleus situated near the center. Some smaller elements arealso found scattered more numerously among both types ofcells. Studnicka describes them, first, as ependymal cells;second, as sense cells, a larger-sized cell which he thinks may 100 FREDERICK TILXKY AXI) LTTHKU 1. WAHHKX lie lian^lionic cells, and, third, iieuroo-lia cells which arc smaller;iid »vnerally more deeply situated elements in the walls of theend-vesicle. The stalk is si rand-like in appearance and may. a b Fig. 52 a, Pineal organ in Acipcnscr nil>irun, 1inral organ in Polyo- dsicle. Its walls are made upof small neuroglia c in the mon* dorsal of the two walls THE PINEAL BODY 101 Johnston194 found a number of nerve fibers constituting a layerwhich extends from the proximal portion to the commissurahabenularis, where it apparently undergoes decussation form-ing the so-called decussatio epiphysis. These observations weremade by means of the Golgi method. Other fibers end freelybetween the cells of the stalk. These cells, Johnston thinks, arerudimentary or degenerated nuclei, perhaps related to the pineal
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphila, bookyear1919
