Mandible, TMJ, Bone Modeling Practice Test 2026 – The Complete All-in-One Guide for Exam Mastery!

Fibroblast-like synoviocytes lining the inner synovial membrane are the cells that secrete synovial fluid. They actively produce hyaluronic acid and lubricin, which give the fluid its thick, slippery quality and enable smooth, low-friction movement of the joint. This fluid also helps nourish the avascular cartilage. In contrast, macrophage-like synoviocytes handle immune defense and debris clearance in the joint rather than secreting the fluid.