What aspect of anatomy deals with the function of body parts and how they work together?

The correct choice emphasizes the study of how body parts function and interact to sustain life processes. Functional anatomy focuses on the relationship between the structure of body parts and their specific roles or functions. This field examines not only the anatomy or the physical structure of organs and systems but also how these components operate collectively in the context of overall bodily functions.

In contrast, while the other options encompass related aspects of anatomy and physiology, they do not specifically capture this dual emphasis on both structure and function. Physiological anatomy may imply a focus on how certain structures support specific physiological processes, but it does not directly address the interaction or coordination of body parts in the same comprehensive way. Anatomical physiology is a less common term that merges anatomy with physiology but may not specifically focus on the dynamics of body part functions in a holistic manner. Pathophysiology, on the other hand, examines how diseases or conditions affect bodily functions, making it more oriented toward abnormal rather than normal function. Thus, the emphasis on both the function and interplay of body parts aligns most closely with functional anatomy.