What are the major differences between the cardiocyte and the skeletal muscle and how do these differences contribute to the ability of the heart to function as an effective pump?

The major differences between the cardiocyte and the skeletal muscle are: as regards their aspect the skeletal fibers are large with a lot of nucleus in their periphery while the cardiocyte cells have branches and intercalated discs with one or two nuclei in the center of the cell.

The T-tubules in the skeletal muscle are small and are part of the triad while in the cardiac muscle the T- tubules are part of the dyad.

The Ca+ in the skeletal muscle comes from terminal cisternal while the Ca+ in the cardiocyte comes from external sources.

The contraction in the skeletal muscle is voluntary and controlled by motor fibers, in the cardiac muscle, the contraction is involuntary and controlled by the autonomic nervous system.

The union between cells in the cardiac muscle is made by intercalar discs while the other type of muscle does not have unions between cells.

These characteristics allows the cardiac muscle to be an effective pump due to the fact that the muscle will not have muscular fatigue and will contract and relax quickly thanks to the connection between cells and to the autonomic nervous system.

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