What are the functions of synovium?

The synovium, a specialized connective tissue lining the joints and certain tendons, serves several key functions. It produces synovial fluid, which lubricates the joint, reducing friction during movement and facilitating nutrient exchange for cartilage. Additionally, the synovium acts as a barrier, protecting the joint from pathogens and inflammation, while also playing a role in sensing mechanical stress and regulating immune responses within the joint environment.