Know your anatomy?

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Across
  1. 3. concentrates bile from the liver
  2. 7. permits the flexion of the lower leg and the extension, relative to the thigh
  3. 8. pumps blood throughout the body
  4. 9. secretes acid and enzymes that digest food
Down
  1. 1. the lens of the eye
  2. 2. an important part of the immune system where cells are stored
  3. 4. filters blood coming from the digestive tract
  4. 5. Muscle that controls the human breathing process
  5. 6. main organ of balance
  6. 7. removes waste products/regulates water fluid