Excerpt from Principles of Animal Biology Thus histology deals with the grouping of cells of a given kind into masses or layers called tissues. The epidermis of the skin is composed of cells of the same general kind grouped together; it is therefore a tissue. Muscle and bone are tissues, as are also tendons, many glands, and the components of the nervous system. Cytology, contrariwise, is concerned with the minute components of cells, the parts of the nucleus, the minute structure of the living matter, the nature of cell ...
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Excerpt from Principles of Animal Biology Thus histology deals with the grouping of cells of a given kind into masses or layers called tissues. The epidermis of the skin is composed of cells of the same general kind grouped together; it is therefore a tissue. Muscle and bone are tissues, as are also tendons, many glands, and the components of the nervous system. Cytology, contrariwise, is concerned with the minute components of cells, the parts of the nucleus, the minute structure of the living matter, the nature of cell organs, and the like. Embryology has to do with the young or developmental stages of animals. When it is purely descriptive, dealing only with the structures of these young stages, not with the processes going on in them, it is morphological in its nature. In creating subdivisions of zoology, the several morphological branches mentioned in the preceding paragraphs have occasionally been elevated to equal rank with the divisions described below; but Since they do not differ in principle, all being concerned with structure, it seems better to combine all of them under the Single head, morphology. Morphology is historically the oldest of the divisions of zoology, Since in early times practically all that was known of animals was their structure. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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