. Anatomy, descriptive and applied. Anatomy. 1340 THE ORGANS OF DIGESTION common bile duct upon the summit of an elevated papilla, situated at the inner side of the descending portion of the duodenum, three or four inches ( to 10 cm.) below the pylorus (Figs. 1098 and 1099). Sometimes the pancreatic duct and common bile duct open separately into the duodenum (Fig. 1029). Frequently there is an accessory duct, which is given off from the canal of Wirsung in the neck of the pancreas and passes horizontally to the right to open into the duodenum about an inch above the orifice of the main duct
. Anatomy, descriptive and applied. Anatomy. 1340 THE ORGANS OF DIGESTION common bile duct upon the summit of an elevated papilla, situated at the inner side of the descending portion of the duodenum, three or four inches ( to 10 cm.) below the pylorus (Figs. 1098 and 1099). Sometimes the pancreatic duct and common bile duct open separately into the duodenum (Fig. 1029). Frequently there is an accessory duct, which is given off from the canal of Wirsung in the neck of the pancreas and passes horizontally to the right to open into the duodenum about an inch above the orifice of the main duct. This is known as the duct of Santorini {dudm pancreatic-m accessorius [Santorini]) (Fig. 1102). The pancreatic duct, near the duodenum, is about the size of an ordinary quill; its walls are thin, consisting of three coats, an external fibrous, a middle muscular, and an internal mucous; the latter is smooth, and furnished near its termination with a few scattered follicles. Structure.—In structure, the pancreas resembles the salivary glands. It differs from them, however, in certain particulars, and is looser and softer in its texture. It is not enclosed in a distinct capsule, but is surrounded by areolar tissue, which dips into its interior, and connects the various lobules of which it is composed. Each lobule, like the lobules of the salivary glands, consists of one of the ultimate ramifications of the main duct, terminating in a number of cecal pouches or alveoli, which are mainly grape-like. The minute ducts connected with the alveoli are narrow and lined with flattened cells. The alveoli are almost completely filled with secreting cells, so that scarcely any lumen is visible. In the centre of the end-tubules flat cells are frequently found. They are continuations into the tubules of the duct epithelium. These cells are known as the centro-acinar cells of Langerhans. The true secreting cells which line the wall of the alveolus are very characteristic. They are pyramidal
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
