The synovium is the inner layer of fibrous capsule of joint, tendon sheaths, synovial bags. Synovium produces synovial fluid, rich blood and lymphatic vessels, nerve endings, there are exchange processes between the synovial cavity and vascular channel. Histologically in the synovial membrane there are 3 layers, it is covered with villi, increasing its area. Of the diseases most common inflammatory processes (see Synovitis, Tendonitis), tumors (see Sinovioma). Cm. also Synovial vagina, Sinovialnuu bag, the Joints.