. The cell; outlines of general anatomy and physiology. Cells; Anatomy; Physiology; Cells; Anatomy; Physiology. ITS CHEMICO-PHYSICAL AND MORPHOLOGCCAL PROPERTIES 81 cellulose walls. The small cell spaces are completely filled up with the cell-substance, which, with the exception of the nucleus and chlorophyll, consists solely of finely granular protoplasm. Flamming recommends cartilage cells from young Salamander larvae as affording the best and most reliable material for the study of the structure of living proto- plasm (Fig. 11). The cell-substance, which during life, as in the young plant-c
. The cell; outlines of general anatomy and physiology. Cells; Anatomy; Physiology; Cells; Anatomy; Physiology. ITS CHEMICO-PHYSICAL AND MORPHOLOGCCAL PROPERTIES 81 cellulose walls. The small cell spaces are completely filled up with the cell-substance, which, with the exception of the nucleus and chlorophyll, consists solely of finely granular protoplasm. Flamming recommends cartilage cells from young Salamander larvae as affording the best and most reliable material for the study of the structure of living proto- plasm (Fig. 11). The cell-substance, which during life, as in the young plant-cells, completely fills the spaces in the cartilaginous ground-substance, is traversed by wavy threads of fairly high refractive power; these are less than 1 yu, in diameter, and are generally most numerous, and at the same time ^'<^- ii'-Living cartilage ceil of a Salamander larva, much most wavy, in the neighbourhood of magnified, with distinctly marked the nucleus; sometimes the periphery threads. (AfterFiemming: from i.,T ,,. ^ .» , .-i' Hatschek, Fig. 2.) ot the cell is nearly, it not entirely, free from thi'eads, but sometimes they are present in great num- bers here also. 2. Cells which contain several diflferent substances in their protoplasm. In plants, and in unicellular organisms, the pro- toplasm frequently contains drops of fluid, in which salt, sugar, and albuminates are dissolved (circulating substances). The further we go (Fig. 12 A) from the growing-point of a plant, where the minute elementary particles of pure protoplasm as described above are grouped, thelarger do the individual cells (c) appear, until they are frequently seen to be more than a hundred times as large as they were originally, whilst, in addition, their cellulose wall has become considerably thicker. However, this growth depends only to a very small extent upon any marked increase of the proto- plasmic substance. The cavity of such a large plant cell is never seen to be completely filled wi
Size: 1837px × 1360px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectanatomy, booksubjectphysiology, booky
