8. Intestine lengths are: small intestine: 5 feet large intestine: 20 feet 9. Glucose is a kind of sugar that is stored in your liver. 10. Peristalsis pushes food through your digestive system. 11. Food goes down your trachea, and air goes down your esophagus. 12. One of the liquid wastes in your body is urine, and solid waste is feces. I 13. Your body's largest organ is the heart. 14. The rectum collects urine in your body. 15. The bladder sends urine to your kidneys. 16. The kidneys filter and remove waste from your blood.​