Across
- 3. when does the Diaphragm contracts and pulling downwards
- 5. Windpipe is in front of the food pipe. It has several rings
- 7. has a very thin membrane separating it from blood in the capillaries.
- 9. respiration when cellular respiration uses oxygen it is called
- 11. Blood contains an iron containing red pigment called
- 12. the process that takes place in living
Down
- 1. which releases energy from food molecules.
- 2. Trachea divides into 2 tubes called bronchi leading to the lungs
- 4. muscle below the lungs
- 6. acid a mild poison
- 8. Pair of spongy organs protected by Ribcage and supported by the muscle Diaphragm.
- 10. common passage for food and air.