Muscle
= Muscle
<Muscle> is <tissue> specialized for <force> generation through contractile machinery. <Skeletal muscle>, <smooth muscle> and cardiac <muscle> differ in cellular organization and control. Shortening is one possible outcome: a <muscle> can also generate <force> while its overall length remains nearly constant.<Structure of Skeletal Muscle by the National Cancer Institute>[Contractile tissue and connective-tissue organization]{ref}