35 橫紋肌裡的T小管是下列何者形成的？

 細胞膜內陷形成 平滑內質網特化形成

微小管特化形成 神經末梢特化形成

A T-tubule (or transverse tubule) is a deep invagination of the sarcolemma, which is the plasma membrane, only found in skeletal and cardiac muscle cells.