Hierarchy of Organization

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Across
  1. 3. The teeth and tongue perform this type of physical digestion in the mouth to start breaking down food.
  2. 6. The entire length of the digestive tract is lined with this tissue, which secretes mucus for lubrication and protection.
  3. 7. Saliva contains these chemicals to help break down food during chemical digestion.
  4. 8. The muscular tube that connects your mouth to your stomach and moves food using peristalsis.
Down
  1. 1. The stomach is lined with this specific type of tissue that sends a message to the brain when it is full.
  2. 2. The main job of the large intestine is the reabsorption of this from undigested food.
  3. 4. The primary job of the narrow, 6-meter-long small intestine is the absorption of these into the bloodstream.
  4. 5. This accessory organ helps with digestion by supplying bile to break down