MICROANATOMY

Detailed explanation-1: -Skeletal muscle fibers occur in muscles which are attached to the skeleton. They are striated in appearance and are under voluntary control.

Detailed explanation-2: -Skeletal muscle tissue is distinctive due to its long, tube-shaped multinucleated fibers (cells) with visible cross-striations. The striations are the result of highly ordered actin and myosin filaments within sarcomeres, the basic contractile units of muscle fibers (see images below).

Detailed explanation-3: -Cardiac and skeletal muscles are defined as striated muscles because under the microscope they appear striped or striated in appearance due to the arrangements of the sarcomeres in distinct bands (Figure 1).

Detailed explanation-4: -Cardiac muscle has branching fibers, one nucleus per cell, striations, and intercalated disks.