General physiology; an outline of the science of life . Fio. (38.—/. Formation of eggs in the sea-urchin. A, Piece of a young ovary with the germinalepithelium within ; B, piece of an older ovary, in which the cells of the germinal epitheliumare developing into eggs which are being constricted off. (After Ludwig.) //. Egg-tubes ofthe ovary of an insect. In the tubes lie eggs in different stages of formation. (AfterHatschek.) bolism more living substance is built up than is broken down. But,as has been seen, the size of every cell is limited and does notsurpass a certain measure. Particularly t
General physiology; an outline of the science of life . Fio. (38.—/. Formation of eggs in the sea-urchin. A, Piece of a young ovary with the germinalepithelium within ; B, piece of an older ovary, in which the cells of the germinal epitheliumare developing into eggs which are being constricted off. (After Ludwig.) //. Egg-tubes ofthe ovary of an insect. In the tubes lie eggs in different stages of formation. (AfterHatschek.) bolism more living substance is built up than is broken down. But,as has been seen, the size of every cell is limited and does notsurpass a certain measure. Particularly the size of every definitecell-form has a limit assigned for that particular form, which varieslittle. Hence, if the quantity of the living substance increasesfurther by growth, this must lead to a growth beyond the measureof the individual, the cell-mass must divide, , it cell, therefore, multiplies by division; and every one of the 190 GENERAL PHYSIOLOGY parts that arise, every daughter-cell, is correspondingly smaller; itcan the
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Keywords: ., bookcentury1800, bookdecade1890, bookidgen, booksubjectphysiology
