ニワトリの前, 後大静脈壁および肺静脈壁に分布する心筋組織

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タイトル別名
  • Cardiac Musculature of the Cranial and Caudal Venae Cavae and the Pulmonary Vein in the Fowl.
  • ニワトリの前,後大静脈壁に分布する心筋組織〔英文〕
  • ニワトリ ノ マエ コウダイ ジョウミャクヘキ ニ ブンプスル シンキン ソシキ

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The cardiac musculature of cranial and caudal venae cavae and pulmonary vein was examined to clarify its distribution pattern in the fowl using both light and electron microscopies. The musculature was distributed from the heart to the root of subclavian vein in the cranial vena cava, to the cranial margin of the liver in the caudal vena cava, and to the left and right distal pulmonary veins in the pulmonary vein, respectively. Judging from the morphology and distribution pattern in the venous wall, the cardiac musculature in the fowl is thought to share the same phylogenic origin with that in mammals. The ultrastructure of cardiac myocytes including transitional cells in the cranial vena cava and the pulmonary vein resembled that of atrial myocytes. While, the typical specialized myocytes such as Purkinje fiber were found in the caudal vena cava of the fowl.

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