Topic 6.1: Digestion and Absorption
Essential Idea: The structure of the wall of the small intestine allows it to move, digest and absorb food.
At SHS, Topic 6.1 is taught in the following class unit(s):
Statements & Objectives:
6.1.U1 The contraction of circular and longitudinal muscle of the small intestine mixes the food with enzymes and moves it along the gut.
6.1.U2 The pancreas secretes enzymes into the lumen of the small intestine.
6.1.U3 Enzymes digest most macromolecules in food into monomers in the small intestine.
6.1.U4 Villi increase the surface area of epithelium over which absorption is carried out.
6.1.U5 Villi absorb monomers formed by digestion as well as mineral ions and vitamins.
6.1.U6 Different methods of membrane transport are required to absorb different nutrients.
6.1.A1 Processes occurring in the small intestine that results in the digestion of starch and transport of the products of digestion to the liver.
6.1.A2 Use of dialysis tubing to model absorption of digested food in the intestine.
6.1.S1 Production of an annotated diagram of the digestive system.
6.1.S2 Identification of tissue layers in transverse sections of the small intestine viewed with a microscope or in a micrograph.
6.1.NOS Use models as representations of the real world-dialysis tubing can be used to model absorption in the intestine.