The acetabulum acts as a socket for which part of the body?

The acetabulum serves as the socket for the femoral head, which is the rounded top portion of the femur, or thigh bone. This ball-and-socket joint allows for a wide range of motion in the hip and is essential for activities such as walking, running, and jumping. The acetabulum is located in the pelvis and provides stability and support for the upper body's weight when standing and during movement.

The structural design of the acetabulum and femoral head permits the hip joint to bear weight while still allowing a considerable degree of flexibility. This unique configuration is pivotal in maintaining balance and facilitating various leg movements.