Across
- 5. The filtering units that make up the kidneys
- 6. Works alongside the respiratory system to get rid of carbon dioxide
- 7. Organs that filter blood that has waste in it
Down
- 1. Tubes that lead from the kidneys to the bladder
- 2. Organ that holds urine until it leaves the body
- 3. The system that eliminates undigested material
- 4. The system that controls blood volume and rids blood of waste produced by metabolism of nutrients