Cardiac Cells Damaged by Infarction Will Show All of the Following

Question

Cardiac cells damaged by infarction will show all of the following except
A) a switch to anaerobic metabolism.
B) release of enzymes into the circulation.
C) release of troponin T and I into the circulation.
D) release of CK-MB into the circulation.
E) an increase in metabolic activity.

Accepted Answer

Cardiac cells damaged by infarction will not show an increase in metabolic activity. In fact, damaged cells will have reduced metabolic activity due to decreased oxygen availability and disrupted cellular processes. Therefore, option E is the correct answer as all other options are factual consequences of cardiac cell damage due to infarction. Option A involves a switch to anaerobic metabolism as cells are deprived of oxygen, and option B, C, and D involve the release of enzymes and proteins from cardiac cells into the circulation due to cell damage.