Ritz argued that the engrossed copy of the Declaration was signed by Congress on July 4, as Jefferson, Adams, and Franklin had stated, and that it was implausible that all three men had been mistaken. Ritz believed that McKean's testimony was questionable, and that historians had misinterpreted the July 19 resolution.
The seven general types of skeletal muscle. The origin of a muscle is the bone, typically proximal, which has greater mass and is more stable during a contraction than a muscle's insertion. For example, with the latissimus dorsi muscle, the origin site is the torso, and the insertion is the arm.
3. Identify the various arrangements of muscle fibers in a skeletal muscle, and relate the arrangements to the strength of contraction and range of motion. 4. Explain how the prime mover, antagonist, synergist, and fixator in a muscle group work together to produce movements.5.rigin and Insertion. i. Contractions of skeletal muscles produce movements by exerting a pulling force on tendons, which in turn pull on bones (or other structures, such as skin). ii. Most muscles extend across at least one joint and are attached to the articulating bones that form the joint. iii.