• We eat about 500 kilograms of food per year.
• About a quart of saliva is produced each day.
• The esophagus is approximately 8 inches long.
• Muscles contract in waves to move the food down the esophagus.
  This means that food would get to a person's stomach, even if 
  they were standing on their head.
  
  
• Adults stomach can hold approzimately 1 quart of material.
• Every day 9 quarts of digested food, liquids and digestive juices 
  flow through the digestive system, but only two pints are lost as feces.
• In the mouth, food is either cooled or warmed to a more suitable
  temperature.

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