5th station - small intestine

Question 1

What types of digestions does the small intestien contain?

Answer 1

Physical: Bile salt in bile secreted by the liver emulsifies lipid into tiny lipid droplets
Chemical:
Pancreatic amylase: starch –> maltose
Pancreatic lipase: lipid–> glycerol + fatty acids
Protease: protein –> peptide –> amino acid
Carbohydrases: disaccharide –> monosaccharide

Question 2

Background information of the small intestine’s digestive juice

Answer 2

Pancrease, liver, gall bladder are the 3 associated organs which involve in the secretion of different digestive juice into the duodenm to continue the digestion processes. However, not only these 3 associated organs, small intestine (duodenum and ileum) itself also involves in chemical digestion

Question 3

The feature of intestinal juice

Answer 3

1. produced by intestinal glands on the wall of duodenum and the first part of ileum
2. do not contain enzymes for chemical digestions

Question 4

What intestinal juice contains?

Answer 4

1. Mucus:
   secreted by mucus-secreting cells
2. Sodium hydrogencarbonate
   neutralize acidic chyme and provide an alkaline medium for other enzymes in small intestine work

Question 5

What are the types of enzymes that are fixed on the cell membrane of intestinal epithelial cell?

Answer 5

carbohydrases:
maltase: maltose --> glucose
sucrase: sucrose --> glucose + fructose
lactose :lactose --> glucose + galactose 
Protease:
peptidase: peptides --> amino acids