Regulation of cutaneous gas exchange by environmental O2 and CO2 in the frog.


The effects of environmental PO2 and PCO2 on cutaneous blood flow and gas exchange were investigated in the frog, Rana pipiens. Halothane (Ha) anesthetized frogs were equilibrated with 9.5% Freon-22 (Fr), 1.1% Ha and air while placed in a box. A gas mixture, initially free of Ha and Fr, was drawn through a small test chamber placed on the abdomen. The… (More)


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