Let’s go step by step to label the synovial joint diagram correctly.
We are given these structures to assign:
- Synovial cavity
- Articular capsule
- Articular cartilage
- Periosteum
- Inner synovial membrane
- Outer fibrous layer
Now, let’s look at each letter in the diagram and match it with the correct structure based on anatomy:
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a. This points to the outermost covering of the bone — that’s the
periosteum. It’s a tough membrane that covers bones (except at joints).
b. This bracket includes two layers: c and d. Together, they make up the
articular capsule, which surrounds the joint. So b = articular capsule.
c. The outer part of the capsule — this is the
outer fibrous layer. It’s strong and helps hold the joint together.
d. The inner part of the capsule — this is the
inner synovial membrane. It secretes synovial fluid.
e. This points to the smooth, white tissue covering the ends of the bones inside the joint — that’s
articular cartilage. It reduces friction and absorbs shock.
f. This is the space between the bones, filled with fluid — that’s the
synovial cavity.
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Double-checking:
- a → periosteum
✔
- b → articular capsule (made of c + d)
✔
- c → outer fibrous layer
✔
- d → inner synovial membrane
✔
- e → articular cartilage
✔
- f → synovial cavity
✔
All labels match standard synovial joint anatomy.
Final Answer:
a. Periosteum
b. Articular capsule
c. Outer fibrous layer
d. Inner synovial membrane
e. Articular cartilage
f. Synovial cavity
Parent Tip: Review the logic above to help your child master the concept of joint worksheet.
