Many tissues come together to create a functional liver organ, it is an example of an organization level. For example, an organ system is composed of many organs.
In multicellular organisms, cells, tissues, organs and organs systems are examples of organizational levels.
An organ system can be defined as a group of organs that work together to perform a specific function.
Examples of organs systems include the circulatory system, urinary system, respiratory system, digestive system, muscular system, etc.
In multicellular organisms, different organization levels are fundamental for maintaining the homeostatic balance of the system.
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