Abstract
Summary
1. The oxygen uptake of octopus heart tissue slices was determined following 16, 24, 36 and 48 hour exposures to in vitro anoxia. Only after 48 hours exposure was recovery oxygen uptake depressed below the control level. 2. Glycogen measurements on the tissue from the reaction vessels indicated a 60–90% decrease in glycogen following in vitro anoxia. There was no relationship between length of anoxia and percentage decrease in glycogen. 3. Values of pH in the suspending media of the experimental vessels, taken at the end of experiment, were considerably below those of the controls. 4. It was concluded that octopus heart muscle is much more resistant to anoxia than the cardiac muscle of higher animals.
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