Give two examples of ball and socket joints

In the human body, several types of joints exist, and one of them is the ball and socket joint. In this type, the rounded head of one bone fits into the cup-like depression of another bone, allowing movement in almost all directions. This joint provides the greatest range of motion compared to other joints. Common examples include the hip joint and the shoulder joint.

Hip Joint

The hip joint is a classic example of a ball and socket joint. It is formed by the articulation of the head of the femur with the acetabulum of the pelvis. The acetabulum is a deep, cup-shaped depression on the inferolateral side of the pelvis, perfectly fitting the femoral head and ensuring strong stability.

Shoulder Joint

The shoulder joint, also called the glenohumeral joint, is another ball and socket joint. It connects the upper limb to the trunk and is formed by the head of the humerus fitting into the glenoid cavity of the scapula. Unlike the hip joint, the socket here is shallower and smaller than the humeral head, which allows for a wider range of movement but makes it less stable.

Correct answer: (B) Ball and Socket Joint