1. SMALL INTESTINE
Spaghetti time!

2. SMALL INTESTINE Roughly 20 feet Small in diameter Champion digester
Absorbs

3. SMALL INTESTINE
Has 3 main parts.
1. Duodenum
2. Jejunum
3. Ileum

4. Duodenum
Section 1

5. Duodenum First 10-12 inches after the stomach. (12 fingers)
(Duodenal ulcers)

9. Duodenum
Chyme- STUFF released from the stomach by the pyloric sphincter.
ACIDIC!!

10. Duodenum Bile Comes from the liver to neutralize acid. Emulsifies fat
Adds color to feces.

11. Duodenum Pancreatic Juice: Comes from pancreas Neutralizes acid
Releases 3 BIG enzymes

12. Duodenum
Amylase:
Starch  maltose

13. Duodenum
Trypsin:
Proteins  peptides

14. Duodenum
Lipase:
Lipids  Fatty acids
& Glycerols

15. Jejunum
Section 2

16. Jejunum
About 8 feet long
BULK of nutrient absorption

19. Jejunum
Intestinal juice: prepares food to be absorbed.

20. Jejunum
Further breakdown
Peptidase:
Peptides  amino acids

21. Jejunum
Maltase:
Maltose  Glucose

22. Ileum
About 12 feet long
Connects to large intestine

24. Color the villi and label I, K, L, and M (Page 475)
SMALL INTESTINE
Color the villi and label I, K, L, and M (Page 475)

25. Color code
Color code the Villi
I,K,L,M

26. Villi: Fingerlike projections to increase surface area
SMALL INTESTINE
Villi: Fingerlike projections to increase surface area
X 600

27. VILLI

28. Crypts: Glands between villi that produce intestinal juices.
SMALL INTESTINE
Crypts: Glands between villi that produce intestinal juices.

29. Lacteal: Center of villi, where FAT products get absorbed.
SMALL INTESTINE
Lacteal: Center of villi, where FAT products get absorbed.

30. SMALL INTESTINE
Arteries and Veins: Vessel network in each villi, ABSORB amino acids and glucose.

31. Veins and Arteries

32. Digestion & Absorbtion
3 Big classes (4 with Nucleic acids)
1. Carbohydrates
2. Proteins
3. Lipids

33. Carbohydrates
Start with Starch
STARCH Maltose
AMYLASE

34. Carbohydrates
Maltose Glucose
Maltase

35. Carbohydrates
Glucose BLOOD

36. PROTEINS
Start with Protein
PROTEIN PEPTIDE
Trypsin

37. Proteins
PEPTIDE Amino Acids
Peptidase
 BLOOD

38. LIPIDS FAT
Start with fat
FAT FAT DROPLET
BILE

39. LIPIDS
F. Droplets Fatty Acids
LIPASE Glycerols
 LACTEAL (Lymph System)