When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. T-tubule - Wikipedia

    en.wikipedia.org/wiki/T-tubule

    T-tubules (transverse tubules) are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells.With membranes that contain large concentrations of ion channels, transporters, and pumps, T-tubules permit rapid transmission of the action potential into the cell, and also play an important role in regulating cellular calcium concentration.

  3. Triad (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Triad_(anatomy)

    In the histology of skeletal muscle, a triad is the structure formed by a T tubule with a sarcoplasmic reticulum (SR) known as the terminal cisterna on either side. [1] Each skeletal muscle fiber has many thousands of triads, visible in muscle fibers that have been sectioned longitudinally. (This property holds because T tubules run ...

  4. Skeletal muscle - Wikipedia

    en.wikipedia.org/wiki/Skeletal_muscle

    Structure of muscle fibre showing a sarcomere under electron microscope with schematic explanation Diagram of sarcoplasmic reticulum with terminal cisternae and T-tubules Skeletal muscle exhibits a distinctive banding pattern when viewed under the microscope due to the arrangement of two contractile proteins myosin , and actin – that are two ...

  5. Sarcoplasmic reticulum - Wikipedia

    en.wikipedia.org/wiki/Sarcoplasmic_reticulum

    The sarcoplasmic reticulum is a network of the tubules that extend throughout muscle cells, wrapping around (but not in direct contact with) the myofibrils (contractile units of the cell). Cardiac and skeletal muscle cells contain structures called transverse tubules (T-tubules) , which are extensions of the cell membrane that travel into the ...

  6. Muscle cell - Wikipedia

    en.wikipedia.org/wiki/Muscle_cell

    This network is composed of groupings of two dilated end-sacs called terminal cisternae, and a single T-tubule (transverse tubule), which bores through the cell and emerge on the other side; together these three components form the triads that exist within the network of the sarcoplasmic reticulum, in which each T-tubule has two terminal ...

  7. Terminal cisternae - Wikipedia

    en.wikipedia.org/wiki/Terminal_cisternae

    A T-tubule surrounded by two terminal cisternae is called a triad. The terminal cisternae, along with the transverse tubules, are the mechanisms of transduction from a nervous impulse to an actual muscle contraction .

  8. AOL Mail

    mail.aol.com/?offerId=netscapeconnect-en-us

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Cardiac muscle - Wikipedia

    en.wikipedia.org/wiki/Cardiac_muscle

    T-tubules in cardiac muscle are bigger and wider than those in skeletal muscle, but fewer in number. [9] In the centre of the cell they join, running into and along the cell as a transverse-axial network. Inside the cell they lie close to the cell's internal calcium store, the sarcoplasmic reticulum.