IB Biology B.3.1 B.3.2 Gas exchange and transport

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Across
  1. 4. The air is _____ when there is no net loss or gain of water molecules by evaporation and condensation.
  2. 11. Word use to describe the layers of arteries and veins
  3. 13. all leaves external layer have a waterproof __________.
  4. 15. Something tha increases in inhalation and decreases in exhalation.
  5. 16. Oxygen transport is ______ efficient when oxygen is dissolved in water.
  6. 17. Element used in beauty that can be used to calculate the stomatal density
  7. 18. I'm a cell that controlls gas exchange in plants.
  8. 19. ______ around veins are essential to ensure the return of blood.
  9. 20. which gradient is necessary to assure gas exchange?
  10. 21. is the total volume of air that can be exhaled after a maximum inhalation or the total volume of air that can be inhaled after a maximum exhalation.
  11. 23. The process of inhaling and exhaling.
  12. 24. A risk factor in coronary heart disease.
  13. 25. Gas exchange surfaces must be _______.
Down
  1. 1. The lumen of veins is _____ than the one of arteries.
  2. 2. In a micrograph venis can look ______ while arteries always look rounded.
  3. 3. main muscle responsible for ventilation.
  4. 5. Spaces between epithelial cells to allow fluid to leak out of capillaries
  5. 6. Capillaries which allow larger volumes of tissue fluid to be produced.
  6. 7. _____ in the walls of the spongy mesophyl allows CO2 to dissolve easily.
  7. 8. ______ is the basis of gas exchange.
  8. 9. Muscles in the abdomen ______ in exhalation.
  9. 10. Cells which produce surfractants in the layer of alveoli.
  10. 12. people with chroinc obstructive pulmonary disease have fewer and bigger ______.
  11. 14. Loss of water from plant leaves when the air around is not saturated with water vapour.
  12. 22. Air's water saturation concentration _____ when temperature rises.