EVERYDAY SCIENCE

Detailed explanation-1: -Contractility The ability of muscle tissue to become short and thick while producing movement.

Detailed explanation-2: -Contractility is the ability of muscle cells to forcefully shorten. For instance, in order to flex (decrease the angle of a joint) your elbow you need to contract (shorten) the biceps brachii and other elbow flexor muscles in the anterior arm.

Detailed explanation-3: -If the muscle length shortens, the contraction is concentric; if the muscle length lengthens, the contraction is eccentric.

Detailed explanation-4: -Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights. Muscle contraction is often followed by muscle relaxation, when contracted muscles return to their normal state.