鳥類心臓の洞房弁について

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　17目50種の鳥類について心臓の洞房弁を肉眼的に観察した.　右前大静脈及び後大静脈と右心房の結合部には浅い分界溝が心外表面から認められる.　洞房口には2枚の洞房弁が存在し,後大静脈口底には洞中隔が認められる.これらの洞房弁と洞中隔は薄い筋性ヒダ(または隆起)でつくられる.　洞房弁と洞中隔の形態,及びそれらの位置的関係は鳥種により違いが認められるが,その詳細はFig.3とTable2に示した.The sinuatrial valves of the heart were investigated macroscopically in 50 species under 17 orders of aves. On the outer surface of the heart, the shallow sulcus terminalis was seen at the junction of the heart with the right anterior vena cava and posterior vena cava. At the sinuatrial orifice two sinuatrial valves were present, and a sinus septum was observed at the bottom of postcaval orifice. The sinuatrial valve and sinus septum were thin muscular folds (or ridges). The form and arrangement of these valves and sinus septum showed variations among the avian species, and they were indicated in Fig. 3 and Table 2.
宮崎大学農学部の論文