guinea worm: parasitic roundworm of India and Africa that lives in the abdomen or beneath the skin of humans and other vertebrates
nematode: unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic
liver: large and complicated reddish-brown glandular organ located in the upper right portion of the abdominal cavity; 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 and breaks down worn-out erythrocytes