1. WARM UP 1.List 3 locations you might find epithelial tissue. 2.Describe how/why epithelial tissue is important in each of the locations you listed.

2. Digestive System

3. General Structure Digestive tract –Tube from mouth to anus Lined with epithelium

4. General Structure Accessory organs –Secrete substances into d.t. Cuboidal epithelium

5. General Function Mechanical processing –Segmentation into small pieces Secretion of enzymes Digestion –Chemical break-down to simple nutrients

6. General Function Absorption –Nutrients to blood Elimination –Unabsorbed waste

7. Digestive Structure and Function Mouth (dt) –Chewing (mp) Salivary glands (ao) –Release saliva (se/d) Moistening and carbohydrate digestion –Salivary amylase (se)

8. Digestive Structure and Function Pharynx (dt) –Pulls food in (mp) Esophagus (dt) –Moves and moistens (mp)

9. Digestive Structure and Function Stomach (dt) –Stores and breaks up food (mp) Rugae –Hydrochloric acid and pepsin (se / d) Protein –Water, minerals absorbed

10. Digestive Structure and Function Liver and Gallbladder (ao) –Make and send bile down bile duct (se)

11. Digestive Structure and Function Pancreas (ao) –Many enzymes sent down pancreatic duct (se)

12. Digestive Structure and Function Small Intestine (dt) –Duodenum Mixes fluids from stomach, pancreas, gallbladder (mp)

13. Digestive Structure and Function Small Intestine (dt) –Jejunum Digests carbohydrates (amylase), proteins (peptidase), fats (bile) Absorbs all nutrients –Villi for surface area

14. Digestive Structure and Function Small Intestine (dt) –Ileum Some absorption

15. Digestive Structure and Function Large intestine/Colon (D.T.) –Ascending, Transverse, Descending, Sigmoid –Absorbs water and minerals –Concentrates undigested matter (e) Fiber

16. Digestive Structure and Function Rectum (D.T.) –Pressure builds –Contracts to expel feces (e) Anus (D.T.) –End of system

17. WRAP UP Describe how the structure of the small intestine allows absorption to happen as efficiently as possible.

18. WARM UP 1.List the 3 major nutrients that we digest, and name an enzyme that digests each of them.

19. WRAP UP List at least 5 organs food passes through as it is being digested, in the correct order.