Explain the digestion in the small intestine .

Explanation

1. The bile , pancretic juice and intestinal juices are the secretions released into the small intestine .
2. The pancreatic juice contains enzymes such as typsinogen , chymotrypsinogen , carboxypeptidases , pancreatic amalyses , pancreatic lipases and nucleases .
3. Trypsinogen is activated by an enzyme , enterokinase , secreted by the intestinal mucosa into active typsin , which in turn activates the enzyme cymotrypsinogen in the pancretic juice .
4. Bile helps in emulsification of fats.
5. Bile salts reduce the surface tension of fat droplets and break them into small globules.
6. Bile also activates lipases to digest lipids .
7. Trypsin hydrolyses proteins into polypetides and peptones, while chymotrypsin hydrolyses peptide bonds associated with specific amino acids .
8. The pancreatic amylase converts glycogen and starch into maltose .
9. Lipase acts on emulsified fat (triglycerides) and hydrolyses them into free fatty acid and monoglycerides. Monoglycerides are further hydrolysed to fatty acid and glycerol.
10. Nucleases in the pancreatic juice break the nucleic acid into nucleotides and nucleosides .
11. The enzymes in the intestinal juice.
Maltose `overset (Maltase) to ` Glucose + Glucose
Sucrose `overset (Sucrase) to` Glucose + Fructose
Lactose `overset(Lactase) to` Glucose + Galactose
Dipeptides , Tripeptides `overset(Peptidase) to` Aminoacids
Nucleotides `overset (Nuclcotidase) to` Nucleoside + Phosphoric acid
Nucleoside `overset (Nuclcotidase) to` Sugar + Nitrogen base
Diglycerids and monoglycerides `overset (Lipase) to` Fatty acids + glycerol