part_of part of part of has_part has part has part develops_from develops from develops from contributes to morphology of produces produces bile liver An exocrine gland which secretes bile and functions in metabolism of protein and carbohydrate and fat, synthesizes substances involved in the clotting of the blood, synthesizes vitamin A, detoxifies poisonous substances, stores glycogen, and breaks down worn-out erythrocytes[GO]. iecur jecur exocrine gland immune system hepatobiliary system endoderm-derived structure septum transversum liver lobule abdomen element digestive system gland liver bud