Across
- 1. Structure also called the windpipe
- 5. Structure that prevents food from entering airway
- 7. Tiny air sacs where gas exchange occurs
- 9. Tube that carries food from mouth to stomach
- 13. Organ that absorbs most nutrients
- 14. Branches of the trachea leading to lungs
Down
- 2. Gas removed from the body when exhaling
- 3. Chewed ball of food swallowed
- 4. Small finger-like projections for absorption
- 6. Movement that pushes food through digestive tract
- 8. Organ that absorbs water from waste
- 10. Gas taken into the body during breathing
- 11. Substance that emulsifies fats
- 12. Muscle that helps lungs expand and contract
- 13. Organ where chemical digestion with acid occurs