Lung structure, Breathing and Respiration

1234567891011121314
Across
  1. 3. A measure of the speed of heart beats (5,4)
  2. 6. Type of respiration carried out without oxygen (9)
  3. 7. Tiny air sacs where gas is exchanged in the lungs (7)
  4. 9. A chemical reaction between glucose and oxygen to release energy in cells (11)
  5. 10. A time when plants respire only (5)
  6. 12. The feeling of a heart beat (5)
  7. 13. A simple sugar (7)
  8. 14. Muscular sheet which contracts to inhale (9)
Down
  1. 1. Type of respiration with an excess of oxygen (7)
  2. 2. Tubes leading from the trachea to each lung (7)
  3. 3. Organ which pumps blood around the body (5)
  4. 4. The tube carrying air to the lungs (7)
  5. 5. Activity which raises your heart rate (8)
  6. 8. Organ responsible to gas exchange with the blood (4)
  7. 10. A second organ used to breath and smell (4)
  8. 11. The part of red blood cells which binds to oxygen (11)