When muscle cells are viewed under the microscope, one can see that they contain a striped pattern (striations). This pattern is formed by a series of basic units called sarcomeres that are ...

Isotonic contractions – these occur when a muscle contracts and changes length and there are two types: Isotonic concentric contraction – this involves the muscle shortening. The origin and ...

The insertion is the other end of the muscle that is attached to the bone which moves. Muscular contractions are defined as the change in the length of the muscle under contraction. Muscles ...