Key result
Frog hearts route oxygenated left atrial blood to carotids and right atrial blood to pulmocutaneous vessels.
Why the study?
The distribution of oxygenated blood in the heart and major vessels of Rana pipiens was analyzed to understand blood circulation patterns.
Answers are grounded in this paper and cite their sources.
Demonstrates selective distribution of oxygenated and deoxygenated blood in the amphibian heart.
Analysis of the oxygen content of blood in the frog heart and its major vessels has shown that in Rana pipiens the carotids receive primarily left atrial blood, which is highly oxygenated, whereas the pulmocutaneous vessels receive blood almost exclusively from the right atrium. Only the aortas receive blood subjected to considerable mixing.
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Karl T. DeLong (1962) studied this question. Blood circulation in the frog heart directs highly oxygenated left atrial blood to the carotids and right atrial blood to pulmocutaneous vessels, with considerable mixing only in the aortas.
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