Which of the following best describes the term 'anatomy'?

The term 'anatomy' specifically refers to the study of the structure of body parts. This encompasses the examination of how various parts of the body are organized, their shapes, sizes, and relationships to one another. Understanding anatomy is foundational in fields like medicine and biology, as it provides a framework for understanding how the body is built and functions structurally.

While the other options present important aspects related to the body and its functions, they do not encapsulate the primary focus of anatomy. The study of body functions pertains to physiology, while the study of tissues relates to histology. The study of cellular processes is more closely aligned with cell biology. Thus, the most accurate description for anatomy is its focus on the structural elements of the body.