Publisher's Synopsis
Excerpt from Endocrine Glands and the Sympathetic System
In a series of investigations, between 1855 and 1867 he admitted that the secretory cell attracts, creates, elab orates in itself secretions which it pours out, either on the outside on the mucous membranes or directly into the blood stream. I have called those which are poured on the outside external secretions and those which are poured into the organism itself internal secretions. The internal secretions are not as well known as the external secre tions. I believe, however, that they definitely exist and we must consider the blood as the product Of vascular blood organs. The glycogenic liver is a large blood organ, that is, a gland which has no external opening. From this organ arises the various sugar products found in the blood and perhaps certain albuminoid substances. There are, however, other blood organs such as, the spleen, the thyroid, the suprarenal capsules, the lymphatic glands.
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