Which skeleton includes the ribcage?

The ribcage is a crucial component of the human skeleton and is part of the axial skeleton. The axial skeleton comprises the central bones along the body's long axis, including the skull, vertebral column, and ribcage. It serves to protect vital organs, such as the heart and lungs, and provides structural support for the body.

In contrast, the appendicular skeleton consists of the bones of the limbs and the girdles that attach them to the axial skeleton. The pelvic skeleton is a part of the appendicular skeleton, specifically related to the lower extremities, and primarily involves the pelvis. The concept of a "neural skeleton" is not a recognized term in anatomy related to the classification of bones.

Therefore, recognizing that the ribcage protects important organs and forms part of the central structure of the torso makes it clear that it belongs to the axial skeleton.