Cellular Physiologists Are Investigating the Mechanisms of Contraction Cessation in Cardiomyocytes

question 321

Multiple Choice

Cellular physiologists are investigating the mechanisms of contraction cessation in cardiomyocytes in response to ischemic injury.  In an animal experiment, the left anterior descending coronary artery is ligated at time 0, and changes in ATP levels within the affected myocardial cells are recorded.  At which point on the graph does the affected portion of the myocardium stop contracting?

• A)A
• B)B
• C)C
• D)D

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