Unit 1- Body Systems Revision

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Across
  1. 3. The process by which oxygen is transferred into the blood. (9 letters)
  2. 5. The muscular wall that separates the thoracic and abdominal cavities, crucial for breathing. (9 letters)
  3. 7. The volume of air inhaled or exhaled during a normal breath. (6 letters
  4. 9. A molecule broken down to release energy in cells. (7 letters)
  5. 11. Rotational movement of the forearm to turn the palm upward. (9 letters)
  6. 14. The energy system that provides short bursts of energy without oxygen. (11 letters)
  7. 15. The energy system that uses oxygen for sustained activity. (6 letters)
  8. 16. The type of muscle found in the walls of internal organs. (8 letters)
Down
  1. 1. A movement that decreases the angle between two body parts. (8 letters)
  2. 2. The primary organ of the respiratory system. (4 letters)
  3. 4. the protein in red blood cells that carries oxygen. (8 letters)
  4. 6. Rotational movement of the forearm to turn the palm downward. (9 letters)
  5. 7. The tissue that connects muscle to bone. (6 letters)
  6. 8. A by-product of anaerobic respiration that causes muscle fatigue. (4 letters)
  7. 10. The smallest blood vessels where gas exchange occurs. (9 letters)
  8. 12. The tiny sacs in the lungs where gas exchange occurs. (7 letters)
  9. 13. The largest artery in the body. (5 letters)