A Manual of General Anatomy; Or, a Concise Description of the Primitive Tissues and Systems Which Compose the Organs in Man, by A.L.J. Bayle and H. - Tapa blanda

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1829. Excerpt: ... THE TEGUMENTAltY SYSTEM. SECTION I. GENERAL OBSERVATIONS. Svnon. Dermoidal system; common integuments; the skin, including all the tissues of which it is composed, as the epidermis, dermis, chorion, &c. &c. Definition.--The tegumentary system is composed of a large membrane which covers the whole surface of the body, and penetrates this latter, to line all the cavities which communicate with the external world. Division It is divided into two secondary systems: the cutaneous, or external tegumentary; and the mucous, or internal tegumentary. Situation.--The teguments are placed over the surfaces of the animal, which communicate more or less directly with external objects Thus, after having enveloped the external surface of the whole body,-they are continued into the cavities of the same, which open externally, either directly or indirectly, as in the mouth, the oesophagus, the stomach, the intestines, and all the excretory canals which are found there, in the air passages, the nasal fossa and all their sinuses, in the genital and urinary organs. General conformation The most general form under which the tegumentary system may be represented is that which rould result from the nnion of two hollow cylinders, conected by their extremities, and whose contiguous surfaces night be separated by an intermediate matter, representing,,y its situation, all the other organs of the body. This com,»rison is only applicable here to the skin and mucous memrane, which is continued with the latter from the mouth to Vie anus. It will include the whole of the teguments, if we add to these cylinders species of prolongations or appendages, which penetrate into various parts of the intermediate substance, and there line parts analogous to the air passages, to the excretory ...