Processing of food by the DS 4. Chemical digestion catabolic steps in which food is broken down to basic building blocks accomplished by enzymes in digestive juices 5. Absorption: passage of food particles into the blood lymph 6. Defecation: elimination of indigestible food substances 1010 4. Chemical digestion • catabolic steps in which food is broken down to basic building blocks • accomplished by enzymes in digestive juices 5. Absorption : passage of food particles into the blood￾lymph 6. Defecation: elimination of indigestible food substances Processing of food by the DS