Muscles and Other Tissues of the Musculoskeletal System

Skeletal muscle is what one considers as muscle that most people can contract to move part of the body. Since the skeletal muscle is a regularly organized group of contractile fibers, it looks like a stripe under the microscope (they are therefore also called striped or striated muscles). Skeletal muscle has different shrinkage rate. The skeletal muscles responsible for posture and movement are attached to the bones and are placed in opposite groups around the joints. For example, the muscle bending the elbow (biceps brachialis muscle) is counteracted by the muscles of the straightened muscle (triceps brachialis). These counterattack movements are balanced. By balancing the movement becomes smooth, it helps to prevent damage to the musculoskeletal system. Skeletal muscle is controlled by the brain and functions under the control of human consciousness, so it is considered as an voluntary muscle. Maintain or increase skeletal muscle size and strength through regular exercise. In addition, growth hormone and testosterone help muscle grow in childhood and maintain adulthood form.

Smooth muscle controls certain body functions that can not be easily controlled. The smooth muscle surrounds many arteries and contracts to regulate blood flow. It develops mainly intestines and contracts to move food and feces along the digestive tract. Smooth muscle is also controlled by the brain, but it is not controlled spontaneously. Because the smooth muscle functions without control of human consciousness, it is considered an involuntary muscle, since the factors that trigger contraction and relaxation of smooth muscle are controlled by the body's need.

Myocardium forms the heart, not part of the musculoskeletal system. Like skeletal muscle, the myocardium has a regular fiber pattern, which appears as stripes even under a microscope. However, myocardium contracts and relaxes rhythmically without human consciousness.

The musculoskeletal system consists of muscles, bones, joints, and other connective tissue components connecting these structures. In general, the musculoskeletal system is the mechanism by which the body performs all mechanical functions. Each joint is designed to perform a specific sequence of actions and is designed to create and promote the transmission of mechanical forces acting around a fulcrum (joint) to achieve complex muscles, Tendons, gliding and other systems. . Any kind of abnormality in these structures will cause failure

Musculoskeletal system CNS regulates musculoskeletal system function. The musculoskeletal system gives the shape and shape of the body and consists of a complex system of bones, joints, skeletal muscles, ligaments, tendons and other tissues. It protects important organs such as the skull that envelopes the brain; the sternum and ribs protect the heart and lungs; it allows for exercise; it includes the bone marrow to help blood cell formation; and calcium and other Save minerals. Bone functions as a lever for transmitting muscular strength. Skeletal muscle is attached to bone through a connective tissue band called tendon. Vessels and nerves enter the muscles through the fascia. When the muscle contracts due to nerve stimulation, it pulls the bone and moves part of the body. Maintain bones in joints via strips called connective tissue

Both ligaments and tendons play an important role in the stability and function of the musculoskeletal system. The tendon connects the muscle to the bone and the ligament connects the bone to the other bone. Both are made of relatively inelastic fibrous connective tissue. Unlike muscle tissue, fibrous connective tissue does not have an important blood supply to deliver the necessary moisture and nutrients to the injured site. Unfortunately, these nutrients are still important to repair damage. The knee is the largest joint in the body and consists of tendons and ligaments. There are four ligaments in the knee, supporting the bone firmly and forming a strong support to provide stability. There are two tendons in the joint. The quadriceps muscle ties the thigh muscle to the knee and the knee and shin extend between the jaws.