The term "appendicular" pertains to what?

The term "appendicular" refers to the limbs or extremities of the body, which includes the arms and legs. In anatomical terms, the appendicular skeleton consists of the bones that form the limbs and the girdles that attach them to the axial skeleton. This is crucial for understanding human anatomy, as the appendicular skeleton is distinct from the axial skeleton, which comprises the skull, vertebral column, and rib cage.

Recognizing the correct association of "appendicular" with extremities is important for medical professionals, as it helps in understanding both physical assessments and medical conditions related to the limbs. The other options describe different aspects of the body; the core muscles involve the trunk, the spine is part of the axial skeleton, and the peripheral nervous system relates to the nerves outside the brain and spinal cord. Thus, the choice that pertains directly to limbs is the most accurate interpretation of "appendicular."