This actually depends on which level of education you are and what they are looking for. Most people though merely considers it a part of the Digestive System as the bile it stores is used during digestion.
I have seen however several people put it down as part of the bilary system or subsystem which responsible for the creation and distribution of bile.
It makes emotions and some emotions are harmful like stress , stress can shorten your life . There is multiple answered to this question but this is just one of them .
