What term describes a linear arrangement of body parts located to the side?

The correct term for a linear arrangement of body parts situated to the side is "Lateral Line." In anatomical terminology, "lateral" refers to structures that are farther from the midline of the body, which is the central line that divides the body into left and right halves.

The concept of lateralization is significant in understanding the positioning and relation of body parts, particularly in discussions of symmetry and asymmetry. For instance, the arms are considered lateral compared to the torso, while the heart is medial to the lungs.

Understanding this term is essential for accurately describing relationships between structures in the body and for effective communication in teaching and learning anatomy.