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/ˈməsəl/ Noun 1. A soft tissue found in most animals containing protein filaments that slide past one another, producing a contraction that changes both the length and the shape of the cell. Muscles function to produce force and motion. They are primarily responsible for maintenance of and changes in posture, locomotion of the organism itself, as well as movement of internal organs, such as the contraction of the heart and movement of food through the digestive system via peristalsis. ( 2. Muscle cells are specialized to generate force and movement. There are three types of muscle tissue: (1) skeletal muscle, (2) smooth muscle, and (3) cardiac muscle. 3. An organ composed of muscle tissue. ( 4. A band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body. (Google Dictionary) 5. A contractile form of tissue which animals use to effect movement. ( Verb 1. Move (an object) in a particular direction by using one’s physical strength. (Google Dictionary) 2. Coerce by violence or by economic or political pressure. (Google Dictionary) Word origin: From Latin musculus “a muscle,” literally “little mouse,” diminutive of mus...

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