SKELETAL MUSCLE TISSUE
Description: long, cylindrical, multinucleated cells; obvious striations
Location: skeletal muscles attached to bones or occasionally to the skin
Function: voluntary movement, locomotion, manipulation of the environment, facial expression

CARDIAC MUSCLE TISSUE
Description: branching, striated, generally uninucleate cells that interdigitate at specialized junctions (intercalated discs)
Location: walls of the heart
Function: as it contracts, it propels blood into the circulation; involuntary control

SMOOTH MUSCLE TISSUE
Description: spindle-shaped cells with central nuclei; cells arranged closely to form sheets; no striations
Location: mostly in the walls of hollow organs
Function: propels substances or objects along internal passageways; involuntary control