Small intestine is the site of comprlete digestion of protein,fat , carbhydrates
Answers
Answer:
Explanation:
Small intestine is the longest part of the alimentary canal. It is made up of three parts- duodenum, jejunum, and ileum. The small intestine is the site for complete digestion of carbohydrates, proteins, and fats.
The small intestine produces intestinal juice from the glands present in the wall, which helps in further digestion of food.
Digestive juices from two glands, namely the liver and pancreas mixes with the food in the small intestine.
The liver produces bile juice (which causes emulsification of fats) and the pancreas produces pancreatic juice (for digesting proteins and emulsified fats).
Following is the detail of digestion of food in the small intestine with the help of the above three secretions.
Pancreatic juice
released by hepatopancreatic duct
Bile
Intestinal juice (succus entericus)
1.
Contains inactive enzymes such as trypsinogen, chymotrypsinogen, procarboxypeptidase, amylase, lipase, nuclease, etc.
Contains bile pigments (Bilirubin and biliverdin), bile salts, cholesterol phospholipids
Contains enzymes such as maltase dipeptidase, lipase nucleosidase, etc.
2
Bile contains no enzyme.
Also contains mucus which in combination with bicarbonates released by pancreas provides alkaline medium and prevents intestinal mucosa from acid
3.
It emulsifies fats into micelles and activates lipases.
Action of pancreatic juice results in:
Yes, all the complete and final digestion takes place there.