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  2. Striated muscle tissue - Wikipedia

    en.wikipedia.org/wiki/Striated_muscle_tissue

    The fibres of striated muscle have a cylindrical shape with blunt ends, whereas those in smooth muscle are spindle-like with tapered ends. Striated muscle tissue has more mitochondria than smooth muscle. Both smooth muscle cells and cardiac muscle cells have a single nucleus, and skeletal muscle cells have many nuclei. [6]

  3. Skeletal muscle - Wikipedia

    en.wikipedia.org/wiki/Skeletal_muscle

    Muscle fibers are formed from the fusion of developmental myoblasts in a process known as myogenesis resulting in long multinucleated cells. In these cells, the nuclei, termed myonuclei, are located along the inside of the cell membrane. Muscle fibers also have multiple mitochondria to meet energy needs. Muscle fibers are in turn composed of ...

  4. Muscle cell - Wikipedia

    en.wikipedia.org/wiki/Muscle_cell

    Cardiac muscle like the skeletal muscle is also striated and the cells contain myofibrils, myofilaments, and sarcomeres as the skeletal muscle cell. The cell membrane is anchored to the cell's cytoskeleton by anchor fibers that are approximately 10 nm wide. These are generally located at the Z lines so that they form grooves and transverse ...

  5. Muscle - Wikipedia

    en.wikipedia.org/wiki/Muscle

    There are three types of muscle tissue in invertebrates that are based on their pattern of striation: transversely striated, obliquely striated, and smooth muscle. In arthropods there is no smooth muscle. The transversely striated type is the most similar to the skeletal muscle in vertebrates. [4]

  6. Sarcomere - Wikipedia

    en.wikipedia.org/wiki/Sarcomere

    A sarcomere is defined as the segment between two neighbouring Z-lines (or Z-discs). In electron micrographs of cross-striated muscle, the Z-line (from the German "zwischen" meaning between) appears in between the I-bands as a dark line that anchors the actin myofilaments. Surrounding the Z-line is the region of the I-band (for isotropic). I ...

  7. High-yield savings rates for January 23, 2025 - AOL

    www.aol.com/finance/savings-interest-rates-today...

    Get today's best rates on high-yield FDIC-insured savings accounts to more quickly grow your everyday money, build an emergency reserve or save for a successful retirement.

  8. This week in Bidenomics: Stranded steelworkers - AOL

    www.aol.com/finance/week-bidenomics-stranded...

    Nippon Steel is the world’s fourth-biggest steelmaker, while US Steel is 24th. Since 2010, US Steel has lost money eight years out of 14. Since 2010, US Steel has lost money eight years out of 14.

  9. Smooth muscle - Wikipedia

    en.wikipedia.org/wiki/Smooth_muscle

    Like striated muscle, smooth muscle can tense and relax. In the relaxed state, each cell is 30–200 micrometers in length, some thousands of times shorter than a skeletal muscle cell. [1] There are no myofibrils present, but much of the cytoplasm is taken up by the proteins, myosin and actin, which together have the capability to contract. [7]