Synovial
Synovial
Synovial (pronunciation: /sɪˈnoʊviəl/), derived from the Greek words 'syn' meaning 'together' and 'ovia' meaning 'egg', refers to a type of connective tissue that lines the inner surface of capsules of synovial joints and tendon sheath. It secretes synovial fluid which reduces friction between the articular cartilage of synovial joints during movement.
Etymology
The term 'synovial' is derived from the Greek words 'syn' and 'ovia'. 'Syn' means 'together' and 'ovia' means 'egg', referring to the egg-white like appearance of the synovial fluid.
Related Terms
- Synovial Joint: A type of joint that is surrounded by a thick flexible capsule (synovial capsule) lined by synovial membrane which produces synovial fluid.
- Synovial Fluid: A viscous, non-Newtonian fluid found in the cavities of synovial joints. It reduces friction between the articular cartilage during movement.
- Synovial Membrane: Also known as synovium or stratum synoviale, it is the soft tissue that lines the non-cartilaginous surfaces within the joint capsule of a synovial joint.
- Synovial Capsule: The fibrous tissue that surrounds a synovial joint. It encloses the joint cavity, synovial fluid, and articulating bones.
- Articular Cartilage: A smooth, white tissue that covers the ends of bones where they come together to form joints. It allows the bones of a joint to glide over one another with very little friction.
- Tendon Sheath: An elongated bursa that wraps around a tendon where it passes through a joint. It is lined with synovial cells that secrete synovial fluid for lubrication.
External links
- Medical encyclopedia article on Synovial
- Wikipedia's article - Synovial
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