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Between the ends of adjacent cardiac muscle cells are specialised intercellular junctions called INTERCALATED DISCS (shown right). These are irregular transverse thickenings of the sarcolemma that contain structures called DESMOSOMES. Desmosomes are like spot-rivets, that hold adjacent cardiac muscle fibres together.
1.The skeletal muscle is controlled by the somatic nervous system, and the cardiac muscles are, by nature, involuntarily controlled. 2.The skeletal muscles are attached to the bone, and the cardiac muscle is found in the heart.3.Skeletal muscle cells are cylindrical in shape, whereas the cardiac muscle cells are semi-spindle in shape. 4.The skeletal muscle cells are longer than the cells of the cardiac muscle.owever, their major difference is that the skeletal muscle is controlled by the somatic nervous system, and the cardiac muscles are, by nature, involuntarily controlled. Besides their overall different locations within the body, these two muscles also have many differences in their cellular structures.