What is the definition of anatomy?

The definition of anatomy is fundamentally about understanding the structure and organization of living organisms, focusing on how the various parts of the body are arranged and how they relate to one another. The option that describes anatomy as "the structure of the gross structure of the body or the study of an organism and the interrelation of its parts" accurately captures this meaning. In anatomy, one examines not only the individual components of the body but also how they fit and function together to form larger systems, ultimately contributing to the organism's overall operation.

Studying anatomy involves observing physical structures, whether they are at the microscopic level (like cells and tissues) or gross anatomical structures (like organs and systems viewed with the naked eye). This foundational knowledge is crucial for various professions, especially in healthcare and massage therapy, where understanding the body's layout leads to better treatment practices.

The other options focus on specific systems or processes. For instance, one option centers on the nervous system, another on muscle function, and a different one on tissue healing, which are important topics but do not encompass the broader definition of anatomy itself.