title: [Cardiac minute volume and its pattern in Rana ridibunda frogs].
abstract: 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.
mesh_terms: D000818:Animals; D002306:Cardiac Volume; D005260:Female; D008297:Male; D009929:Organ Size; D011652:Pulmonary Circulation; D011865:Radioisotope Dilution Technique; D011895:Rana ridibunda / Q000502:physiology*; D011898:Ranidae / Q000502:physiology*; D012039:Regional Blood Flow
vernacular_title: Minutnyĭ ob"em serdtsa i ego raspredelenie u liagushek Rana ridibunda.