Which of the following situations is most likely to produce a heart attack?
A. The tight junction has ripped and is allowing ions to leak through the membrane lining the heart.
B. The gap junctions have collapsed and they do not allow the correct flow of ions from one cell to the next.
C. The cell walls have broken down and are not able to support the heart.
D. The plasmodesmata have collapsed and they do not allow the correct flow of ions from one cell to the next.
Answer: B
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