• 1. 
    We use only 10 percent of our brains.

  • TRUE
  • FALSE
  • 2. 
    A human cannot live without a stomach.

  • TRUE
  • FALSE
  • 3. 
    The human digestive tract is only a few centimeters long.

  • TRUE
  • FALSE
  • 4. 
    The role of the kidneys is to help process waste.

  • TRUE
  • FALSE
  • 5. 
    In humans the kidneys are located in the chest.

  • TRUE
  • FALSE
  • 6. 
    The retina is the lens at the front of the eye.

  • TRUE
  • FALSE
  • 7. 
    The spleen is part of the lymphatic system.

  • TRUE
  • FALSE
  • 8. 
    An organ is any useless body part.

  • TRUE
  • FALSE
  • 9. 
    The cardiovascular system acts in isolation from other organs.

  • TRUE
  • FALSE
  • 10. 
    The human body’s largest organ is the liver.

  • TRUE
  • FALSE
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