鶏の比較解剖学的並びに局所解剖学的研究 : LXII. 膵臓の微細血管分布

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The fine blood vascular system in tl?e pancreas was elucidated by observing his-tological preparations and transparent preparations from 31 chickens which had beeninjected with India ink containing 10% gelatin into the arterial system.There are two main branches supplying the pancreas, the Ramus pancreatico-duodenalis and the Ramus pancreaticus. These rami, then, run through the inter-lobular connective tissue and give an A. interlobularis to this tissue. The Aa. intra-lobulares arise from the A. interlobularis and enter each lobule, in which they aredivided into arterioles. In the interacinar tissue they make up a capillary network,from which aflerent vessels are sent to the islets of Langerhans (Fig. l) . Theseafferent vessels form wide, convoluted glomerulus-like sinusoids both in small A andin small B islets of Langerhans. Numerous efferent vessels which arise from sinusoidsat the periphery of the islets of Langerhans enter the interacinar tissue. They an-astomose with the interacinar capillary network and drain into venules (Fig. 2).The venous blood empties into the V. interlobularis via the Vv. intralobulares.In the lobus splenicus, the afferent vessels in large A islets of Langerhans form a wide,convoluted rete-mirabile-like sinusoid network (Figs. 4, 7, and 12). From these rete-mirabile-like structures, it is suggested that the large A islet of Langerhans may secreteconcentrated glucagon in the fowl.A complicated venous plexus exists in the wall of the pancreatic duct (Fig. 5).Its venous blood drains into the V. interlobularis near the pancreatic duct. This factsuggests that the reabsorption of the water content from the pancreatic juice may bedone in this portion of the excretory duct of the pancreas.
社団法人日本獣医学会の論文
1970-08-25

鶏の比較解剖学的並びに局所解剖学的研究 : LXII. 膵臓の微細血管分布

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