What is the definition of a "system" in the context of human anatomy?

In human anatomy, a "system" is best defined as a group of organs that work together to perform one or more vital functions essential for maintaining the body’s homeostasis and overall health. For example, the circulatory system includes the heart, blood vessels, and blood, all collaborating to transport nutrients, oxygen, and waste throughout the body. Each organ within a system has a specific role that contributes to the system's overarching function. This interconnectedness is crucial for the proper functioning of the organism as a whole.

The other choices do not capture the comprehensive nature of a system in anatomy. While some options discuss structures or classifications, they do not emphasize the collaborative aspect of multiple organs working in unison to achieve essential biological functions, which is the defining characteristic of a system.