Which of the following is immovable joint?

Options

A. 1.Pivot-Joint between head and neck
B. 2.Hinge-joint of elbow
C. 3.Joint between skull bone
D. 4.Ball and socket Joint

Explanation

To determine which of the following is an immovable joint, we can analyze the options provided:

1. **Pivot Joint**: This type of joint allows for rotational movement. An example is the joint between the first and second cervical vertebrae (the atlas and axis), which allows for head rotation. Therefore, this is a movable joint.

2. **Hinge Joint**: This joint allows movement in one plane, similar to the way a door opens and closes. The elbow is a classic example of a hinge joint. Hence, this is also a movable joint.

3. **Joint between Skull Bones**: The joints between the bones of the skull, known as sutures, are immovable. These joints are fixed and do not allow for any movement, making them non-movable joints.

4. **Ball and Socket Joint**: This type of joint allows for a wide range of motion in multiple directions. The hip and shoulder joints are examples of ball and socket joints. Thus, this is a movable joint.

Based on the analysis, the immovable joint among the options is the **joint between skull bones**.

### Final Answer:
The immovable joint is the **joint between skull bones**.

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