1 Battle star, an award issued to U.S. Navy ships for participation in battles.  Battlestar (fictional spaceship), a type of spaceship in the original and new television series Battlestar Galactica.
Smooth muscle is fundamentally different from skeletal muscle and cardiac muscle in terms of structure, function, regulation of contraction, and excitation-contraction coupling. Smooth muscle cells known as myocytes, have a fusiform shape and, like striated muscle, can tense and relax.
Smooth muscle is the muscle of the internal organs and is called involuntary because it is not under voluntary control. Cardiac muscle is a special type of muscle found only in the heart. It consists of linked fibers that contract in unison producing the heartbeat.The striated muscle cells, which comprise about 40% of the body weight, are voluntary.ardiac muscle is a special type of muscle found only in the heart. It consists of linked fibers that contract in unison producing the heartbeat. The striated muscle cells, which comprise about 40% of the body weight, are voluntary.