illustration Muscle Tissues Each skeletal muscle fiber has many bundles of myofilaments Each bundle is called a myofibril This is what gives the muscle its striated appearance The contractile units of the cells are called sarcomeres

illustration  Muscle Tissues  Each skeletal muscle fiber has many bundles of myofilaments  Each bundle is called a myofibril  This is what gives the muscle its striated appearance  The contractile units of the cells are called sarcomeres    - 17878654

Structure of the skin. The structure of the skin. Vector illustration

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