1. List 3 locations you might find epithelial tissue.
WARM UP
List 3 locations you might find epithelial tissue.
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 Secretion of enzymes Digestion
Segmentation into small pieces
Secretion of enzymes
Digestion
Chemical break-down to simple nutrients

6. General Function Absorption Elimination Nutrients to blood
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
List the 3 major nutrients that we digest, and name an enzyme that digests each of them.