What is the function of T tubules?

Name: What is the function of T tubules?
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Quizplus · Accepted Answer

T tubules, or transverse tubules, are invaginations of the sarcolemma (muscle cell membrane) that penetrate into the center of skeletal and cardiac muscle cells. Their primary function is to rapidly conduct action potentials from the surface of the muscle cell into its interior, ensuring that the entire muscle cell contracts simultaneously. This is crucial for the efficient functioning of muscle fibers.

What Is the Function of T Tubules