Gland. A part, or organ, that has the power of making a secretion, peculiar to itself. A gland may be a simple pocket, or follicle, as is an oil gland of the skin, or it may be an aggregate of such glands, as is the liver. Or'gan. Any part, or member, that has some specific function, or duty, by which some one of the body's activities is carried on; for example, the eye is the organ of vision, the liver is one of the organs of digestion. Tho'rax. The cavity of the trunk immediately above the diaphragm. Tis'sue (t[)i]sh'[=u]). A fabric, or texture, composed of cells and cell-products of one kind; as, for example, nervous tissue, muscular tissue, fatty tissue. Se cre'tion. A substance made from the blood, the special character of which depends upon the kind of gland that makes, or secretes, it. II. RELATING TO THE DIGESTIVE SYSTEM Al i men'ta ry ca nal'. The food tube, or digestive tube, extending from lips and nose to the end of the rectum, with its various branches and attachments. Bile. A yellow, bitter, alkaline liquid secreted by the liver, and especially valuable in the digestion of fats; sometimes called gall. Co'lon. The large intestine. Di ges'tion. The process in the body by which food is changed to the form in which it can pass from the alimentary canal to the blood vessels and lymphatics. Di ges'tive sys'tem. The alimentary canal with all its branches and appendages; that is, all the organs that directly take part in the process of digestion. E soph'a gus. The tube through which food and drink pass from the pharynx to the stomach; called also the gul'let. Gall blad'der. The bile bladder; the sac, or reservoir, lying on the under side of the liver, in which the bile is received from the liver, and in which it is retained until discharged through the gall duct into the small intestine. Gas'tric juice. The digestive liquid secreted by the glands of the stomach (pep'tic glands); it contains pepsin, acid, and ferments; called also peptic juice. In tes'tine. The last part of the alimentary canal, extending from the pylorus. Its length is five or six times that of the body. The greater part of its length is called the small intestine in distinction from the remaining part, which, though much shorter, is larger in diameter, and is called the large intestine or co'lon. The intestine as a whole is sometimes called the bow'el. Liv'er. The large gland that secretes bile and is active in changing or killing harmful substances; located in the upper part of the abdominal cavity, on the right side, and folds over on the pyloric end of the stomach.