Psychology and the School (Classic Reprint)

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Excerpt from Psychology and the SchoolSpecialization of functions. In the unicellular ani mals all these functions are performed by one cell. But the multicellular animals are made up of different kinds Of cells, each with its special function. The cells that are specialized for contractility form in the aggre gate the muscular system Of higher animals. The cells that are specialized for sensitivity are distributed for the most part over the surface of the body, and in some cases take the highly specialized forms Of sense-organs. The cells that are specialized for conductivity taken to gether form the nervous system, and serve to connect the sensitive cells with the contractile (muscular) cells. The higher in the scale of animal evolution, the more numerous and highly specialized these cells become, and the behavior is correspondingly more varied. All of this development is clearly for the purpose Of better adaptation of the animal to its environment.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.