T-tubules are unique to muscle cells.

Name: T-tubules are unique to muscle cells.
Brand: Quizplus
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Quizplus · Accepted Answer

T-tubules are invaginations of the sarcolemma (cell membrane) that extend deep into the muscle fiber. They play a crucial role in muscle contraction by allowing the rapid and synchronized conduction of action potentials throughout the muscle fiber. T-tubules are found specifically in skeletal and cardiac muscle cells.

T-Tubules Are Unique to Muscle Cells