What does the appendicular skeleton consist of?

The appendicular skeleton consists of the upper and lower extremities, which play a crucial role in facilitating movement and interaction with the environment. This part of the skeleton includes the bones of the arms, legs, shoulders, and hips, providing the framework that allows for a wide range of motions such as lifting, walking, running, and grasping. The functionality of the appendicular skeleton is integral to activities that involve locomotion and manipulation of objects.

In contrast, the skull and spine form the axial skeleton, which serves as the central structure of the body and provides support for the head, neck, and trunk. Similarly, the ribs and sternum are also components of the axial skeleton, which protects vital organs such as the heart and lungs and supports the upright posture of the human body. Thus, only the upper and lower extremities pertain to the appendicular skeleton, highlighting its specific role in bodily movement.