Digestion

2. this enemy begins fat digestion in the stomach (2 words)
4. this organ stores and releases bile
6. protects the stomach lining from the acidic gastric juice
8. chemical messengers
9. this organ produces bile to emulsify fats
13. last part of the small intestine
16. enzyme that begins protein digestion in the stomach
18. the process by which undigested food and waste products are removed from the body
20. this organ produces multiple digestive enzymes
22. first part of the small intestine
24. semiliquid mass of partially digested food that also contains gastric juices
25. the physiological drive for non-specific foods

1. the psychological desire to eat specific foods
3. the organ that reabsorbs water and prepares waste for elimination (2 words)
5. the process of taking molecules across the GI tract walls and into circulation
7. this is the organ where most digestion and absorption occurs (2 words)
10. this organ moves food from the mouth to the stomach through peristalsis
11. tiny finger-like projections in the small intestine
12. salivary enzyme that begins carbohydrate digestion in the mouth
14. mass of partially broken-down food that enters the esophagus
15. this organ mixes food with gastric juice to form chyme
17. rhythmic contractions and relaxation of muscles that move food down the GI tract
19. the organ that begins mechanical digestion
21. middle part of the small intestine
23. the process by which food is broken down into molecules