Cardiac muscles:
In the longitudinal section, the muscle fibers are planned as in the skeletal muscle, but they are branched, and there are darker transverse regions called intercalated disks.
The single-core heart muscle fibers are intermediate in the fib and are surrounded by a concentrated amount of muscle cytoplasm. In addition, the diameter of the cardiac muscle fibers is smaller than that of the skeletal muscle.
In the transverse sections, the fibers are irregular and the muscle fibers within the one fiber are more rigid than in the musculoskeletal fibers, and the fibroids are missing in the area around the nucleus.
In the longitudinal section, the muscle fibers are planned as in the skeletal muscle, but they are branched, and there are darker transverse regions called intercalated disks.
The single-core heart muscle fibers are intermediate in the fib and are surrounded by a concentrated amount of muscle cytoplasm. In addition, the diameter of the cardiac muscle fibers is smaller than that of the skeletal muscle.
In the transverse sections, the fibers are irregular and the muscle fibers within the one fiber are more rigid than in the musculoskeletal fibers, and the fibroids are missing in the area around the nucleus.