Why are there NO blood vessels inside the joint cavity of synovial joints?

• A. Movement would damage the delicate blood vessels.
• B. Hyaluronic acid would react with blood.
• C. Blood would prevent production of articular cartilage.
• D. Blood would pool and limit the movement of the joint.

Answer: (A)

Verified step by step guidance

1. Understand the structure of synovial joints: Synovial joints are characterized by a joint cavity filled with synovial fluid, which allows for smooth movement between the articulating bones.
2. Consider the role of synovial fluid: Synovial fluid, which contains hyaluronic acid, acts as a lubricant and shock absorber, facilitating movement and reducing friction within the joint.
3. Analyze the impact of blood vessels in the joint cavity: If blood vessels were present, the movement of the joint could damage these delicate structures, leading to bleeding and inflammation.
4. Evaluate the chemical interaction: Hyaluronic acid in the synovial fluid could potentially react with blood, altering the composition and function of the synovial fluid.
5. Consider the mechanical implications: The presence of blood in the joint cavity could lead to pooling, which would restrict the movement of the joint and impair its function.