Absorption of Nutrients Learning Targets: Name the four layers of the alimentary canal wall and sate the function of each layer. (K) Describe the process of absorption in both the small and large intestines. (K)

The Walls of the Digestive System The walls of the digestive system, from mouth to anus, are composed of 4 layers of tissue. Use your book (pg. 402) to find out what the function of each layer is. Summarize the key functions on your worksheet. 1-4

What’s special about the wall of the small intestine? 5-7

The function of the lacteal 8

Final absorption in the small intestine 9-16 See it in action by clicking on the picture.

Moving on to the large intestine Note that the lining of the large intestine is not as folded as the lining of the small intestine

21-23

Use of nutrients 24-27

28-33

Elimination Learning Target: Describe the process of feces formation and removal. (K)

34-36

37-39

Why do I have gas? Click on the radiograph to find out. 40

Why am I constipated? Click on the picture to find out why. 41

Everything you ever wanted to know about diarrhea…. Click on the picture 42