Identify the incorrectly matched joint of the body.

Options

A. Ball and socket joint : between femur and pelvic girdle
B. Hinge joint : between Atlas and axis
C. Pivot joint : between Atlas and axis
D. Gliding joint : between carpal and metacarpal of thumb

Answer

To solve the question of identifying the incorrectly matched joint of the body, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Types of Joints**:
- Familiarize yourself with the types of joints in the human body: ball and socket, hinge, pivot, and gliding joints.

2. **Evaluate Option 1**:
- **Option**: Ball and socket joint between the femur and the pelvic girdle.
- **Analysis**: This is a correct match. The hip joint is indeed a ball and socket joint formed by the head of the femur fitting into the acetabulum of the pelvic girdle.

3. **Evaluate Option 2**:
- **Option**: Hinge joint between atlas and axis.
- **Analysis**: This is an incorrect match. The joint between the atlas (C1) and axis (C2) is a pivot joint, not a hinge joint.

4. **Evaluate Option 3**:
- **Option**: Pivot joint between atlas and axis.
- **Analysis**: This is a correct match. The atlas and axis form a pivot joint, allowing for the rotation of the head.

5. **Evaluate Option 4**:
- **Option**: Gliding joint between the carpals and metacarpals of the thumb.
- **Analysis**: This is a correct match. The joint between the carpals and metacarpals of the thumb is a gliding joint, allowing for a range of motion.

6. **Conclusion**:
- The incorrectly matched joint is in **Option 2**, where a hinge joint is incorrectly stated to be between the atlas and axis.

### Final Answer:
The incorrectly matched joint of the body is **Option 2: Hinge joint between atlas and axis**.

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