Digestion process

Question 1

Carbohydrates digestion process

Answer 1

1. Salivary amylase - digestion in the mouth
2. In the stomach it is mixed with acid
3. In the duodenum - pancreatic amylase
4. Disaccharidease - in the intestine - digest disaccharides

Question 2

Transport of glucose across the intestinal membrane

Answer 2

1. Na+ gradient established by sodium-potassium pump
   2.Glucose is absorbed with Na+
2. glucose moves out of the intestinal epithelial cells by facilitated diffusion
3. glucose enters the capillaries of the intestinal villi and is taken to the liver

Question 3

Carbohydrates in the liver

Answer 3

converted to glucose

Question 4

Enzymes that digest lipids

Answer 4

lipase - secreted by the pancreas

Question 5

Emulsification

Answer 5

the dispersal of a liquid inside another liquid. For example: large lipids in bile salts

Question 6

Intestinal transport of lipids

Answer 6

1. Bile salts aggregate around digested lipids to form micelles
2. Micelle connects to the epithelial cells so the lipids can pass into the intestinal cells
3. triglycerides are made and other lipids are packaged in a protein coat and become a chylomicron
4. Leave the cell, pass the capillary into the lactal of the lymphatic system
5. Lymphatic system takes the chylomicron to the liver

Question 7

Liver and lipids

Answer 7

1. Storage
2. conversion
3. use as energy

Question 8

Enzymes on proteins

Answer 8

Pepsin - in the stomach
Trypsin - in the small intestine
peptidases - in the small intestine after trypsin

Question 9

Protein absorbtion

Answer 9

1. Cotransport with Na+
2. Move into blood capillaries and carried to the liver