Which one of the following options is incorrect ?

Options

A. Hinge joint-between humerus and pectoral girdle
B. Pivot joint-between atlas, axis and occipital condyle
C. Gliding joint-between the carpals
D. Saddle joint-between carpal and metacarpals of thumb

Explanation

To determine which option is incorrect regarding the types of joints, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understand the Types of Joints**:
- Joints are connections between two bones and can be classified into various types based on their structure and the movements they allow.
- The main types of synovial joints include hinge joints, pivot joints, gliding joints, and saddle joints.

2. **Evaluate Option A**:
- The option states that a hinge joint is found between the humerus and the pectoral girdle.
- This is incorrect because the joint between the humerus and the pectoral girdle is a ball and socket joint (the shoulder joint), not a hinge joint.
- Hinge joints are typically found in the elbow and knee, allowing movement in one plane.

3. **Evaluate Option B**:
- This option states that a pivot joint is found between the atlas and axis (the first two vertebrae).
- This is correct as the atlas and axis form a pivot joint, allowing for rotational movement of the head.

4. **Evaluate Option C**:
- This option claims that a gliding joint is found between the carpals (wrist bones).
- This is also correct, as gliding joints allow for the sliding movements between the carpal bones.

5. **Evaluate Option D**:
- This option states that a saddle joint is found between the carpal and metacarpal bones of the thumb.
- This is correct as well, as the saddle joint allows for a wide range of motion in the thumb.

6. **Conclusion**:
- The incorrect statement is in Option A, which misidentifies the joint type between the humerus and the pectoral girdle.

### Final Answer:
The incorrect option is **Option A**: Hinge joint is between humerus and the pectoral girdle.