PULMONARY VASOMOTOR RESPONSES AND ACID‐BASE BALANCE IN PERFUSED EVISCERATED DOG PREPARATIONS

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Abstract
1. In three eviscerated dog preparations perfused with horse blood, the upper thoracic sympathetic chains and cervical vagosympathetic nerve trunks were stimulated at levels of blood pH ranging from 6·8 to 7·75, and total blood CO2 from 21 to 99 volumes per cent.2. Pulmonary vasoconstriction was the invariable response.