Respiration and Nutrition

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Across
  1. 6. a juice produced by liver
  2. 7. process of taking in food
  3. 8. ballon-like part of lungs
  4. 9. entry point of food
Down
  1. 1. Part of respiratory tract with rings of cartilage
  2. 2. A life process
  3. 3. place where fats get digested
  4. 4. a place where proteins are digested
  5. 5. process of taking in O2
  6. 9. substance that protects the stomach lining