• Discussion Fanatics

    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.

  • Discussion Fanatics

    Inside the muscle fibre, the T-tubules lie next to the terminal cisternae of an internal membrane system derived from the endoplasmic reticulum, called the sarcoplasmic reticulum (SR), which is a store of calcium ions.

    Also Know, how would you explain skeletal muscle cell contraction were there no T tubules? 2012). Muscle contraction relies on the movement of electrical charge through the T tubules to trigger the release of calcium ions. Without the T tubules muscle contraction would not be possible.

    Considering this, what is the function of T tubules quizlet?

    - T tubules are transverse tubules formed by inward extensions of the sarcolemma. -Function is to allow electrical impulses traveling along the sarcomere to move deeper into the cell.

    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).

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medical health heart and cardiovascular diseases tubules muscle muscle contraction tubules muscle t-tubules

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