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A joint is the connection between two bones. The skeletal system is made of different types of joints, including fibrous, cartilagenous and synovial. A ligament holds fibrous joints together. Cartilage joints are bones held together with a connection of cartilage. A synovial capsule surrounds the synovial joints. Synovial joints are the largest number of joint types in the skeletal system. Each joint type has a specific method of movement. The fibrous (fixed or immovable) joints in the skeletal system include the sutures of the skull. The coronal suture connects the parietal and frontal skull bones. The sagittal suture connects the two parietal bones. The lambdoid suture unites the parietal with the occipital.
Our musculoskeletal system is made up of muscles, tendons, ligaments, bones, cartilage, joints and bursae. Our muscles work with the nervous system to contract when stimulated with impulses (messages through the receptor arc) from motor nerves. The muscles are attached to the bones with ligaments. Synovial joints also include: 2  a joint cavity or joint space: space between the articulating surfaces; articulating surfaces are the bone surfaces that move against each other when the joint moves. 3  The articulating surfaces are covered with a layer of hyaline cartilage that cushions and protects the bones.