What are the different parts of the skeletal system?

The main function of the skeletal system is to provide a solid frame for muscles and act as support and protection of internal organs. The bones form the basis of the skeleton, but there are other parts of the skeletal system that allow the freedom of movement: joints, cartilage, ligaments and tendons. They themselves are solid bones and can only move in the joints. Other types of connective tissue interact with the muscle system and other bones of the skeletal system to provide a solid and flexible framework. Bones consist of a variable calcium grid that provides as much support as possible, are considered a hard connective tissue and are the basic parts of the skeletal system.

The skeleton bones are connected to each other on the joints, attached ligaments and padded with cartilage. There are several types of joints, each of which allows a different type of movement. The joints of the joints, such as the knees and elbow, allow the joint to move along one axis. Loosen the balls and sockets such as shoulder or hip. Sliding and swivel joints, for exampleD on the neck and wrist, meanwhile, they allow to rotate around the fixed position. The joints and cartilage are coated in synovial fluid, which adds a lubrication effect to the cartilage.

cartilage is one of the parts of the skeletal system that due to friction of the fingal end of the bones against grinding. The sections between the joints are where the cartilage is the most important, but the ear, nose and bronchial pipes also contain it. This substance is more flexible than bones, but not as much as muscles; His elasticity pushed the joint bones against a sudden shock. Another defining characteristic of cartilage is the lack of blood vessels, which causes its injuries to slowly recover compared to other parts of the skeletal system.

bonds are hard, elastic tissue strips that attach to the end of the bones on the joints. On the stable joints so that the joints cannot exceed their designed range of movement. Although they are elastic, tatThe property only persists when the liga is below a certain length; The extension of the ligament around this length is called hyperextension and healing takes months.

tendons have a similar structure to ligaments. The main function of the tendon is to provide the turn necessary to move the bone; The tendon attaches to the muscle and the contraction of the muscle pulls the tendon. The other end of the tendon moves the opposite member of the joint. In pairs of skeletal muscles, the tendons are placed on the opposite sides of the joint to create an extension and contraction of muscles.