This principle highlights the interconnectedness between the anatomical features of a body part and its specific role or function. In other words, the way something is built directly influences how it operates.

Here are some examples:

* The human hand: The opposable thumb and flexible fingers allow for precise grasping and manipulation.

* The heart: The four chambers and valves ensure efficient blood circulation throughout the body.

* The lungs: The numerous alveoli, with their large surface area, facilitate efficient gas exchange.

This principle is fundamental to understanding the workings of living organisms, and it applies to all levels of organization, from cells to organs to entire systems.