Describe the role of synovial fluid in maintaining joint health. (3 marks)
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Sample Answer
Lubrication:
- Synovial fluid acts as a lubricant, keeping joints well-oiled and moving surfaces apart.
- This reduces friction between articular cartilages during movement.
Cushioning:
- Forms a fluid cushion between joint surfaces, particularly important during vigorous movement when additional fluid is pumped into the joint space.
Nutrition and waste removal:
- Provides nutrients to articular cartilage which lacks blood supply.
- Simultaneously removes waste products, maintaining healthy cartilage and overall joint function.
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Sample Answer
Lubrication:
- Synovial fluid acts as a lubricant, keeping joints well-oiled and moving surfaces apart.
- This reduces friction between articular cartilages during movement.
Cushioning:
- Forms a fluid cushion between joint surfaces, particularly important during vigorous movement when additional fluid is pumped into the joint space.
Nutrition and waste removal:
- Provides nutrients to articular cartilage which lacks blood supply.
- Simultaneously removes waste products, maintaining healthy cartilage and overall joint function.