鶏の比較解剖学的並びに局所解剖学的研究 : LXXIII. 腎小体の大きさとその分布

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  • COMPARATIVE AND TOPOGRAPHICAL ANATOMY OF THE FOWL : LXXIII. SIZE AND DISTRIBUTION OF CORPUSCULA RENIS
  • ニワトリ ノ ヒカク カイボウガクテキ ナラビニ キョクショ カイボウガクテキ ケンキュウ 78 ジンショウタイ ノ オオキサ ト ソノ ブンプ

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Tl?e definitiouts of lobe, lobule, and aciruus of the kidney were discussed and deter-mined. The kidneys of the fowl are divided into three Robes, Lobus renaalis cranialis, Lobus renalis medius, and Lobus renalis caudalis. Microscopic exaznination Itas revealedthat the lobe consists of a large number of lobules. The portionts of tlae lobtule correspond-ing to Cortex renis and Medulla renis of tlae mammalian kidney were named Acinus?corticalis and Acinus medullaris, respectively. Furthermore, tl?e, Xcintus corticalis was?divided into Zona externa and Zona interna, and between tlxe two parts tlaere xwas anintralobular vein (Fig. l).The major axis of the small Corpuscula renis in the Zona extertta was 54.60 7t atmaximum, 26.00 p at minimum, and 49.S3+2.75, p in mean. Tlte major axis of tlae largeCorpuscula renis in the Zona interna was [17.00 jt at maximum, 65.00 p at minimum, and80.99+13.37 7t in mean. Tlte ma.jor axis of the middle Corpuscula reuuis inn tlte transi-tional portion of Zona externa s, nd Zonta intertta was 58.72f4.69 p ita IIICIIII. TI?e mean sizes of the Corpuscula renis are shown in Table l.The percentages of distribution of the large, middle, and small Corpuscula renis inthe Acinus corticalis were 535, 2l5, and 26%, respectively. The mean diameter of anAcinus corticalis was l.340+26O p. this value was larger in the fowl than in any otherkind of birds.The sizes of the Corpuscula rends in each breed are showrn inn Table 2. Jut tlaese sizes, there were some differences among breeds. It was not recognized tlaat tlae Corpuscularents were larger in size in a large breed than in a small breed. In the same breed, itmay be possible to conclude that the Corpuscula renis of the large fowl are larger tltantlaose of the small fowl.

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