Which one of the following pair 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 carpel and metacarpals of thumb

Explanation

To determine which pair is incorrect among the given options, we will analyze each option step by step.

### Step 1: Understand the Types of Joints
First, we need to understand the different types of joints mentioned in the question:
- **Ball and Socket Joint**: Allows for rotational movement and is found in the shoulder (between the humerus and the pectoral girdle).
- **Hinge Joint**: Allows for bending and straightening motions, found in the elbow and knee.
- **Pivot Joint**: Allows for rotational movement, found between the atlas and axis of the vertebrae.
- **Gliding Joint**: Allows for sliding movements, found between the carpal bones in the wrist.
- **Saddle Joint**: Allows for movement in two planes, found between the carpals and metacarpals of the thumb.

### Step 2: Analyze Each Option
1. **Option 1**: "Hind joint is present between humerus and the pectoral girdle."
- This statement is incorrect. The joint between the humerus and the pectoral girdle is a ball and socket joint, not a hind joint.

2. **Option 2**: "Pivot joint is present between the atlas, axis, and the occipital condyle."
- This statement is correct. The pivot joint allows for rotation between the atlas and axis, and the occipital condyle is involved in the connection of the skull to the spine.

3. **Option 3**: "Gliding joint is present between the carpals."
- This statement is correct. The gliding joints between the carpal bones allow them to slide over one another.

4. **Option 4**: "Saddle joint is present between the carpals and the metacarpals of the thumb."
- This statement is correct. The saddle joint allows for a range of motion in the thumb.

### Step 3: Conclusion
After analyzing all the options, we conclude that the first option is the incorrect pair. Therefore, the answer to the question is:

**Answer**: Option 1 is incorrect.

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