14. Assume that a string is tied around the heart at the level shown in the diagram by the red line Assume also that the string is tied loosely enough

14. Assume that a string is tied around the heart at the level shown in the diagram by the red line Assume also that the string is tied loosely enough to simulate human first-degree heart block. State the effect of this procedure on the atria:ventricle contraction ratio AND explain the underlying physiology related to the effect. Transcribed Image Text: 12-16. Refers to the diagram below of a frog heart. Answer questions 14-16 based
on the procedures performed on the frog heart as descried in the lab manual.