Principles of Animal Biology (Classic Reprint) - Softcover

Shull, A. Franklin

Softcover

ISBN 10: 1332565786 ISBN 13: 9781332565788

Verlag: Forgotten Books, 2016

Inhaltsangabe

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.

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Details zur Ausgabe

• Verlag: Forgotten Books
• Erscheinungsdatum: 2016
• Sprache: Englisch
• ISBN 10: 1332565786
• ISBN 13: 9781332565788
• Einband: Taschenbuch
• Anzahl der Seiten: 466
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