Across
- 2. Muscle that helps breathing (9 letters)
- 4. Flap covering windpipe while swallowing (10 letters)
- 6. Tube carrying air to lungs (7 letters)
- 7. Part of digestive system absorbing nutrients (14 letters)
- 9. Tiny air sacs in lungs (8 letters)
Down
- 1. First organ where food is chewed (5 letters)
- 3. Process by which plants synthesize their food(14 letters)
- 5. Organ that pumps blood (5 letters)
- 8. Organ producing bile (5 letters)
- 10. Pair of organs for respiration (5 letters)