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.

question 16

Extracted 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.


Extracted text: 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. 15. Assume that a scissor cut is made at the red line so that the superior chambers are physically separated from the inferior chamber. State how this procedure affects heart activity 16. Explain the physiology related to your answer in #15..