American Journal of Physiology, 1909, Vol. 24 (Classic Reprint)
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| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from American Journal of Physiology, 1909, Vol. 24 The effects of heat on striated muscle have received a great deal of attention and are described in detail in many of the text-books of physiology. The effects of heat on smooth muscle, on the other hand, have been little studied; Vernon has, however, given a more or less detailed account of the changes in length which take place in this tissue at various temperatures. Fig. I is a copy of two of Vernon´s curves. The upper curve was obtained from the frog´s gastrocnemius, and the lower one from a ring of the smooth muscle of the oesophagus of the same animal. The curves represent the changes in length which take place when the tissues are heated gradually from 20° C. to 90° C. in 0.7 per cent sodium chloride solution; the time required for the whole process was about thirty minutes. As is seen from the curves, the two tissues behave oppositely between about 40° and 50°, the striated muscle shortening in this interval and the smooth muscle lengthening almost as markedly. At about 53° both tissues shorten. Vernon has studied the changes in length which occur under the influence of heat in the striated and smooth muscle of a number of different animals. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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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