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.
Occupational Health Handbook
Digestive System hoped i helped in some way.
A- alcohol because the yellow is a sign of liver failure
True. If those traits are there, you know that they will respect what you want in the relationship.