What three bones fuse to form the Os Coxae?

The Os Coxae, also known as the hip bone, is formed by the fusion of three distinct bones: the ilium, ischium, and pubis. These three bones come together at an area known as the acetabulum, which is the socket for the hip joint.

The ilium is the largest of the three bones and forms the upper part of the Os Coxae. It is easily recognizable due to its broad, flaring shape. The ischium is located at the lower and back part of the hip bone and is what bears weight when sitting. The pubis is situated at the front of the pelvis and forms the anterior portion of the Os Coxae.

Understanding these bones and their contributions to the structure of the pelvis is essential for recognizing how they support not only the weight of the body but also serve as attachment points for muscles and ligaments that facilitate movement.

The other options refer to bones in different parts of the body. The first choice involves carpal bones found in the wrist, the third option includes bones of the lower leg, and the final option lists bones that are part of the upper limb, none of which relate to the formation of the Os Coxae.