Digestion

2. The organ that mixes, digests, and stores food
5. The first section of the small intestine
8. The biological urge to eat.
10. The passage where food travels from the mouth to the stomach
11. Covers the opening to the trachea during swallowing
14. The hormone that produces a feeling of satiety, produced in adipose tissue
17. An enzyme produced by the salivary glands that begins the chemical digestion of carbohydrates
19. Muscles that control the passage of material from one organ to the next
21. The mechanical digestion that breaks food into smaller pieces
23. The last section of the small intestine
24. The muscular contractions moving food through the GI tract
26. Series of organs arranged as a long tube through which the food passes

1. An enzyme to digest protein
3. The acid found in the stomach that denatures proteins and activates pepsin
4. Where digestion begins
6. Chemicals produced in specialized glands that travel in the bloodstream to target organs in other parts of the body
7. A mixture in the stomach that contains acid and enzymes to break down food, especially proteins and fats
9. An enzyme to digest fats
12. The hormone that stimulates hunger
13. The region of the brain that controls hunger and fullness by responding to signals from the body
15. The sphincter that separates the stomach and the small intestine
16. Undigested food passes through this valve from the small intestine to the large intestine
18. The psycological desire to eat
20. Semisolid product of mechanical and chemical digestion in the stomach
22. A protein critical to the absorption of vitamin B12
25. The second section of the small intestine