The joint between the atlas and axis is an example of

Options

A. Pivot joint
B. Ball and socket joint
C. Hinge joint
D. Gliding joint

Answer

To solve the question regarding the joint between the atlas and axis, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Bones Involved**:
- The atlas (C1) and axis (C2) are the first two cervical vertebrae in the human spine located in the neck region.

2. **Understand the Function of the Joint**:
- The joint between the atlas and axis allows for a range of motion, particularly rotation of the head. This is crucial for movements such as shaking the head "no".

3. **Classify the Type of Joint**:
- The joint between the atlas and axis is characterized by a specific structure that allows for rotational movement. This structure resembles a pivot.

4. **Differentiate from Other Joint Types**:
- Compare the pivot joint with other types of joints:
- **Ball and Socket Joint**: Allows for multi-directional movement (e.g., shoulder joint).
- **Hinge Joint**: Allows movement in one direction (e.g., knee joint).
- **Gliding Joint**: Allows bones to slide over one another (e.g., joints in the wrist).

5. **Conclusion**:
- Based on the characteristics and functions, the joint between the atlas and axis is classified as a **pivot joint**.

### Final Answer:
The joint between the atlas and axis is an example of a **pivot joint**.

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