Citation:
An organ system is a group of organs that work together to perform one or more functions in the body. Each system has a specific role and is critical for maintaining the body's homeostasis and overall health.
The regulation of internal conditions within the body to maintain a stable, constant environment despite external changes.
Tissue: A group of similar cells that perform a specific function within an organism.
Organ: A self-contained part of an organism that performs a specific function, such as the heart or liver