Trivia: What digestive system organ can regenerate itself?
Stomach
Large intestine
Liver
Mouth
Correct Answer: Liver
So why is this answer correct? : Even after 90% of the liver has been removed, it still has the ability to regenerate. The liver is part of the biliary subsystem that exists within the digestive system. This organ processes nutrients absorbed by the small intestine and filters harmful chemicals out of the body.