The hip bone, also known as the pelvis, is not part of the axial skeleton. It belongs to the appendicular skeleton.
The axial skeleton consists of the skull, vertebral column, and rib cage, which all help to protect vital organs and provide structural support for the body. The appendicular skeleton, on the other hand, includes the bones of the limbs and girdles, which are responsible for movement and mobility.
Specifically, the hip bone connects the lower limbs to the axial skeleton, facilitating the body’s ability to stand, walk, and perform various physical activities. Understanding the distinction between these two skeletal systems helps clarify their unique roles in the human body.