Identify the incorrect matched joint of the body .

Options

A. Ball and socket joint : between humerus and pectoral girdle
B. Hinge joint : knee joint
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 in the question.

### Step-by-Step Solution:

1. **Identify the Types of Joints**:
- There are several types of joints in the human body, but the main ones we need to focus on are:
- Ball and Socket Joint
- Hinge Joint
- Pivot Joint
- Gliding Joint (also known as Plane Joint)
- Saddle Joint

2. **Analyze Each Joint Match**:
- **Ball and Socket Joint**: This joint allows for rotational movement and is found between the humerus (upper arm bone) and the pectoral girdle (shoulder). This match is correct.
- **Hinge Joint**: This joint allows for bending and straightening motions, such as in the knee joint. This match is correct.
- **Pivot Joint**: This joint allows for rotational movement, such as the joint between the atlas and axis (the first two cervical vertebrae in the neck). This match is correct.
- **Gliding Joint**: The question states that there is a gliding joint between the carpals and metacarpals of the thumb. However, this is incorrect. The joint between the carpals and the metacarpals of the thumb is actually a **saddle joint**, which allows for a greater range of motion than a gliding joint.

3. **Conclusion**:
- The incorrect match is the gliding joint between the carpals and metacarpals of the thumb. It should be classified as a saddle joint.

### Final Answer:
The incorrect matched joint of the body is the gliding joint between the carpals and metacarpals of the thumb.