The design of the skeletal system is closely related to its function. The skeleton constitutes approximately 20% of total body weight. It consists of bones, cartilage, ligaments, and joints of the body; bones are the largest component. Joints, or articulations, are the intersections between bones, and ligaments connect bones at the articulations so as to strengthen the joints. The skeletal system is usually conceptualized as two parts: the axial and appendicular skeletons. The misalignment of a bone or a joint causes mechanical imbalance of the system, which increases the effects of stress. Thus an integrative understanding of the functional anatomy of the skeletal system is crucial in preventing and treating sports-related injuries. The major bones and muscles of the body are described in Chapter 12.
The skeletal system determines shape and body size. Although the general size and shape of the bones are inherited, structural adaptations can be caused by external forces (e.g., weight bearing) and influenced by the internal forces exerted by tendons, ligaments, and muscles. In the developing skeleton, the influence of weight bearing and muscular forces have a more substantial effect on the formation of the size and shape of the bones than the same forces have on a mature skeleton. The skeletal system performs many mechanical and biologic functions: leverage, support, protection, energy processing, storage, and blood cell formation. Some of these functions, such as leverage, support, and stress absorption, are critically important for human movement.
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Everything you wanted to know about. How To Cure Tennis Elbow. Are you an athlete who suffers from tennis elbow? Contrary to popular opinion, most people who suffer from tennis elbow do not even play tennis. They get this condition, which is a torn tendon in the elbow, from the strain of using the same motions with the arm, repeatedly. If you have tennis elbow, you understand how the pain can disrupt your day.