ANATOMY

Detailed explanation-1: -Ball-and-socket joints possess a rounded, ball-like end of one bone fitting into a cuplike socket of another bone. This organization allows the greatest range of motion, as all movement types are possible in all directions. Examples of ball-and-socket joints are the shoulder and hip joints (Figure 19.32).

Detailed explanation-2: -Ball-and-socket joints. Ball-and-socket joints, such as the shoulder and hip joints, allow backward, forward, sideways, and rotating movements.

Detailed explanation-3: -A ball-and-socket joint allows the greatest range of movement of any movable joint. It allows forward and backward as well as upward and downward motions. It also allows rotation in a circle. The hip and shoulder are the only two ball-and-socket joints in the human body.

Detailed explanation-4: -The hip joint is known as a ball-and-socket joint. The rounded head of the femur articulates with the acetabulum, which is formed by the junction of the ilium, ischium, and pubis.