. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Accessory Duct Duct Wirsung Fig. 268. Development of the human pancreas, showing origin from dorsal and ventral endodermal outpocketings. a, in 12 mm embryo; b, in 16 mm embryo; c, in child at birth. (After Arey.) A curious modification of the pancreatic apparatus which not infre- quently appears, particularly in the cat, is a pancreatic bladder, or reservoir- like enlargement of the pancreatic duct for the temporary storage of exces- sive secretion, an em
. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Accessory Duct Duct Wirsung Fig. 268. Development of the human pancreas, showing origin from dorsal and ventral endodermal outpocketings. a, in 12 mm embryo; b, in 16 mm embryo; c, in child at birth. (After Arey.) A curious modification of the pancreatic apparatus which not infre- quently appears, particularly in the cat, is a pancreatic bladder, or reservoir- like enlargement of the pancreatic duct for the temporary storage of exces- sive secretion, an emergency organ quite coniparable with the gall bladder that serves similarly as a storage reservoir for the bile of the liver (Fig. 269). Pancreatic __ Bladder Gall Bladd Right Hepat Hepatic Duct Cystic Duct. Pancreatic Duct——^ Fig. 269. Pancreatic bladder from a female cat. (After Boyden.) In general it may be said that the pancreas is a gland of dual character since, in addition to its production of pancreatic "juice" which is poured into the intestine through ducts, there are present in the pancreatic tissue certain distinct interlobular cell aggregates, also endodermal in origin, called the islands of Langerhans (Fig. 270). These secrete substances (hormones) of a character quite different from the pancreatic juice itself, which are carried to all parts of the body through the circulating blood. The islands. 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 Walter, Herbert Eugene, b. 1867; Sayles, Leonard Perkins, 1902-. New York : Macmillan Co.
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Keywords: ., bookcentury1900, booksubjectanatomycomparative, booksubjectverte
