Across
- 4. Main organ of the circulatory system.
- 5. Filters waste and produces urine.
- 7. Main respiratory organ for gas exchange.
- 9. Pumps blood throughout the circulatory system.
Down
- 1. Absorbs water and processes waste.
- 2. Produces insulin and digestive enzymes.
- 3. Breaks down food into nutrients.
- 6. Largest external organ, protecting the body.
- 7. Largest internal organ; detoxifies the blood.
- 8. Controls the body's functions as part of the nervous system.