Cardiac muscle cannot increase its strength by recruitment because

Question

Quizplus · Accepted Answer

Cardiac muscle cells are coupled electrically through gap junctions, which means that when one cell is activated, the activation spreads to all connected cells, leading to a coordinated contraction of the heart muscle. This interconnectedness ensures that all or none of the cells contract at any given time, making recruitment (the process of increasing strength by activating more muscle fibers) not applicable to cardiac muscle.

Cardiac Muscle Cannot Increase Its Strength by Recruitment Because