Synol fluid – all are true except :
**Core Concept**
Synovial fluid is a clear, thick liquid that fills the space between joints, providing lubrication and cushioning to the bones. It is produced by the synovial membrane, a layer of tissue that lines the inner surface of the joint capsule.
**Why the Correct Answer is Right**
Synovial fluid contains hyaluronic acid, which gives it its thick, viscous consistency. This substance helps to reduce friction between the bones and joint cartilage, allowing for smooth movement. Additionally, synovial fluid contains hyaluronidase, an enzyme that breaks down hyaluronic acid to facilitate joint movement. The fluid also contains glycoproteins, such as lubricin, which help to reduce friction and improve joint mobility.
**Why Each Wrong Option is Incorrect**
**Option A:** While synovial fluid does contain hyaluronic acid, it is not the primary component of the fluid. Hyaluronic acid is present in small amounts, but the fluid is mostly composed of water.
**Option B:** Glycoproteins, such as lubricin, are present in synovial fluid, but they are not the primary function of the fluid. Lubricin is a component of the fluid that helps to reduce friction.
**Option C:** Synovial fluid is not primarily composed of enzymes. While hyaluronidase is present in the fluid, it is not the primary component.
**Clinical Pearl / High-Yield Fact**
Synovial fluid is an important component of joint health, and its composition can be affected by various conditions, such as osteoarthritis or rheumatoid arthritis. Understanding the properties and function of synovial fluid is crucial for diagnosing and managing joint-related disorders.
**Correct Answer:** A.