The socket of the hip joint is called the acetabulum. Which option names this structure?

The socket of the hip joint is called the acetabulum. Which option names this structure?

• A. Acetabulum
• B. Shoulder
• C. Wrist
• D. Knee

Answer: (A)

In the hip joint, the head of the thigh bone fits into a cup-shaped socket on the pelvis. That socket is called the acetabulum, formed by parts of the ilium, ischium, and pubis, and it together with the femoral head creates a ball-and-socket joint that allows a wide range of movement while staying stable. The shoulder has a different socket—the glenoid cavity of the scapula—while the wrist and knee involve other joints and naming, not this socket. So the socket of the hip joint is acetabulum.

In the hip joint, the head of the thigh bone fits into a cup-shaped socket on the pelvis. That socket is called the acetabulum, formed by parts of the ilium, ischium, and pubis, and it together with the femoral head creates a ball-and-socket joint that allows a wide range of movement while staying stable. The shoulder has a different socket—the glenoid cavity of the scapula—while the wrist and knee involve other joints and naming, not this socket. So the socket of the hip joint is acetabulum.