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Draw a diagram to show the structure of a synovial joint - Leaving Cert Biology - Question a - 2006
Question a
Draw a diagram to show the structure of a synovial joint. Label three parts of the joint that you have drawn, other than bones. Explain the functions of the three p... show full transcript
Worked Solution & Example Answer:Draw a diagram to show the structure of a synovial joint - Leaving Cert Biology - Question a - 2006
Step 1
Draw a diagram to show the structure of a synovial joint. Label three parts of the joint that you have drawn, other than bones.
Answer
To create a thorough diagram of a synovial joint, include the following labeled parts:
- Cartilage: This smooth tissue covers the ends of bones, providing a cushion to absorb shock and reduce friction during movement.
- Synovial Fluid: This viscous fluid is found within the synovial cavity, enabling friction-free movement and shock absorption between the joint surfaces.
- Synovial Membrane: This membrane secretes the synovial fluid and lines the joint capsule, helping maintain joint lubrication.
Step 2
Explain the functions of the three parts that you have labeled.
Answer
The functions of the labeled parts are as follows:
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Cartilage: It absorbs shock and reduces wear on the bones, protecting them from damage during movement. Additionally, it aids in smooth movement by providing a frictionless surface.
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Synovial Fluid: This fluid decreases friction between the articular cartilage of synovial joints during movement and acts as a lubricant. It also absorbs shock, contributing to the overall stability of the joint.
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Synovial Membrane: The membrane plays a crucial role in producing synovial fluid, which is essential for nutrition and lubrication of the joint, ensuring that it functions smoothly.
Step 3
Step 4
Give a possible cause of the disorder that you have named in (iii) and suggest a treatment for it.
Answer
A possible cause of osteoarthritis can be wear and tear due to age or repetitive stress on the joints over time. Other contributing factors may include genetic predisposition or previous injuries.
A suggested treatment includes:
- Anti-inflammatory drugs: To relieve pain and reduce inflammation.
- Physical therapy: To improve joint function and maintain mobility.
- Exercise: To strengthen muscles supporting the joint, improve range of motion, and alleviate stiffness.