Across
- 2. tiny, finger-shaped structures that line the inside of the small intestine. They increase the small intestine's surface area so nutrients can be better absorbed into the bloodstream.
- 4. the semifluid mass of partially digested food that passes from the stomach to the small intestine.
- 5. the watery fluid secreted into the mouth that aids in swallowing food.
- 6. the tube in the throat and chest through which food travels from the mouth to the stomach.
- 7. a colorless, odorless, gaseous element that is found in air and water. It is necessary for humans, animals and plants to live.
- 9. the tube in the throat and chest through which air travels to and from the lungs.
- 11. the saclike organ in the upper abdomen where swallowed food begins to be digested.
- 12. the long, narrow part of the intestine where food is digested and nutrients are absorbed into the bloodstream.
- 13. the involuntary, wave-like muscle contractions that occur in the digestive tract.
- 15. the organ at the top of the throat that contains the vocal cords.
Down
- 1. the process by which food is broken down into simpler substances by the body.
- 3. the large flat muscle between the lungs and stomach.
- 6. a protein that can cause a chemical reaction. They aid in natural processes, such as digestion.
- 8. the short, wide part of the intestine where water is reabsorbed into the body and waste becomes solid.
- 10. the organ where bile is stored
- 14. one of the two saclike organs that people and animals use to breathe.