Title: What is the T tubules function in muscle contraction?
Headings: What is the T tubules function in muscle contraction?
Asked by: Ibrahym Antinori
What is the T tubules function in muscle contraction?

Content: The function of T-TUBULES is to conduct impulses from the surface of the cell (SARCOLEMMA) down into the cell and, specifically, to another structure in the cell called the SARCOPLASMIC RETICULUM. Click to see full answer. In this way, what are T tubules in muscle? T-tubules (transverse tubules) are extensions of the cell membrane that penetrate into the centre of skeletal and cardiac muscle cells. Through these mechanisms, T-tubules allow heart muscle cells to contract more forcefully by synchronising calcium release throughout the cell. Similarly, do T tubules have voltage gated channels? Action potentials are conducted into the interior of muscle fibers via the T-tubules and there activate voltage-gated channels known as dihydropyridine receptors (DHPR). Unlike in cardiac muscle, very little calcium enters the muscle fiber from the extracellular space (via the DHPR). Regarding this, how would you explain skeletal muscle cell contraction were there no T tubules? 2012).