MICROANATOMY

Detailed explanation-1: -The inner membrane of synovial joints is called the synovial membrane and secretes synovial fluid into the joint cavity . Synovial fluid is an ultrafiltrate from plasma, and contains proteins derived from the blood plasma and proteins that are produced by cells within the joint tissues.

Detailed explanation-2: -Type B cells-fibroblast-like, responsible for synthesizing and secreting major extracellular matrix proteins in synovial fluid including hyaluronic acid and lubricin.

Detailed explanation-3: -Lining the inner surface of the articular capsule is a thin synovial membrane. The cells of this membrane secrete synovial fluid (synovia = “a thick fluid”), a thick, slimy fluid that provides lubrication to further reduce friction between the bones of the joint.