Digestive System

3. A condition in which stomach contents move backwards into the gullet.
6. The long tube where digestion is completed and digested food is absorbed into the bloodstream.
7. The muscular tube that connects the mouth to the stomach and moves food downward.
8. The liquid in the mouth that moistens food and helps begin digestion.

1. The process in which food is broken down into simple substances that can enter the bloodstream.
2. The substance in plants that must be broken down before a cow can use its nutrients.
4. The swelling of the lining of the stomach that may cause stomach pain, loss of appetite and vomiting.
5. A substance found in fruits and vegetables that helps food move through the digestive tract more easily.
6. The organ where food is mixed with gastric juice and broken down further.
7. The muscular part of a chicken's stomach that grinds food using small hard particles such as sand or pebbles.