The musculoskeletal system is a type of organ system that allows for movement and stability of the body and consists of bones, muscles, joints, tendons, cartilage, ligaments, bursae (fluid-filled sacs), and other connective tissue. Complications arise when individual parts of this bodily system are injured can range from minor discomfort to serious medical conditions. Symptoms of musculoskeletal disorders (MSDs) can be acute or chronic and may include inflammation, swelling, pain, fatigue, weakness, joint noises and stiffness, limited range of motion, and lack of coordination.
The skeletal system serves many important functions, including providing structure, shape, form, support, and protection for the body. The skeletal system also allows for bodily movement, produces blood for the body, and stores minerals. The skeletal system consists of 206 bones that form a rigid framework as well as protect soft tissues and vital organs of the body. For example, the brain is protected by the skull which surrounds it and the heart and lungs are enclosed in the sternum and rib cage.
Bodily movement is made possible by the interaction of the muscular and skeletal systems. For this reason, they are often grouped together as the musculoskeletal system. Muscles are connected to bones by tendons. Bones are connected to each other by ligaments. Where bones meet one another is called a joint. Muscles that cause movement of a joint are connected to two different bones. The muscles contract and relax to cause movement. An example would be the contraction of the biceps and a relaxation of the triceps. This produces a bend at the elbow. The contraction of the triceps and relaxation of the biceps produces the effect of straightening the arm.
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