In anatomy, a synovial membrane is a thin, delicate membrane, secreting a thick viscid and glairy fluid similar to egg-white. Synovial membranes are arranged in the form of short, wide tubes around joints such as the lining of synovial bursae, and as sheaths for tendons. The synovial membrane secrets its lubricating fluid into the joint or tendon to allow easy movement. Research Synovial Membrane