. Elementary physiology. Physiology; Physiology. I40 Elementary Physiology. Besides these glands there are single cells in large numbers to be found in the inner lining layer of the intestine/ which, from their shape, are termed goblet cells. These goblet cells secrete mucus, which moistens the surface of the intestine, and may be regarded as the simplest type of gland to be found in the body. In the arrangement of their cells, the salivary glands and the pancreas are what is known as racemose glands. The cells which furnish the secretion are aggregated in little lobules. "^^" Fig. 6
. Elementary physiology. Physiology; Physiology. I40 Elementary Physiology. Besides these glands there are single cells in large numbers to be found in the inner lining layer of the intestine/ which, from their shape, are termed goblet cells. These goblet cells secrete mucus, which moistens the surface of the intestine, and may be regarded as the simplest type of gland to be found in the body. In the arrangement of their cells, the salivary glands and the pancreas are what is known as racemose glands. The cells which furnish the secretion are aggregated in little lobules. "^^" Fig. 69.—Section of the submaxillary gland of the dog, showing the commencement of a duct in the alveoli. (Magnified 425 diameters.) a, one of the alveoli, several of which are in the section shown grouped around the com- mencement of the duct it'; a', an alveolus, not opened by the section; b, basement- membrane in section ; c, interstitial connective tissue of the gland; d, section of a duct which has passed away from the alveoli, and is now lined with characteristically striated columnar cells ; s, semilunar group of darkly stained cells at the periphery of an alveolus. or bunches, which are composed of smaller groups of cells called acini or alveoli. In each acinus the cells are arranged round a central minute duct, or hcmen^ which serves to carry off the small quantity of secretion furnished by the acinus. The minute ducts leading from the acini unite with one another to form larger ducts, which again unite, until finally there is 1 Such cells are also found amongst the ciliated cells of the trachea and bronchi, and in other similar Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Moore, Benjamin, 1867?-1922. New York: Longmans, Green, and Co.
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