Across
- 2. examples: liver, heart, stomach, lungs
- 3. breaks food down using acid and muscles
- 8. where food enters
- 10. external exit for urine
- 12. complete living thing
- 14. where gas exchange takes place
- 15. microscopic finger-like folds found in small intestine
- 16. carry deoxygenated blood to the heart
Down
- 1. filter waste and extra water from blood
- 4. groups of similar cells that work together to perform a specific job
- 5. the body keeping its internal conditions stable and balanced
- 6. carry oxygenated blood away from the heart
- 7. control center
- 9. cord pathway for messages between the brain and body
- 11. organs in females that release eggs
- 13. basic building blocks of life