Brod V I, Viazovoĭ V V, Golub' A S, Shoshenko K A
Zh Evol Biokhim Fiziol. 1984 Jan-Feb;20(1):101-4.
In frogs with an average body mass 56 g, the minute volume of the heart is equal to 4.5 ml/min X 100 g, which is approximately an order lower than in mammals with the same body mass. Pulmonary fraction constitutes 52% of the minute volume of the heart. The main bulk of systemic fraction of the minute volume of the heart (78%) passes to locomotor system and skin, whereas 19% of this volume are adressed to vegetative organs. This pattern of distribution significantly differs from that in mammals with a similar body mass, in which the vegetative and locomotor fractions are approximately equal. Differentiation in muscular blood supply was noted--there is a threefold difference in the volume of blood flow between gastrocnemius and submandibular muscles.
在平均体重为56克的青蛙中，心脏每分钟输出量为4.5毫升/分钟×100克，这比相同体重的哺乳动物大约低一个数量级。肺循环部分占心脏每分钟输出量的52%。心脏每分钟输出量的体循环部分的主要部分（78%）流向运动系统和皮肤，而这部分输出量的19%流向营养器官。这种分布模式与体重相似的哺乳动物明显不同，在哺乳动物中，营养器官和运动系统的部分大致相等。观察到肌肉血液供应存在差异——腓肠肌和下颌下肌肉之间的血流量相差三倍。
