These are all the digestive processes that take place in the stomach. The remaining food, now called chyme, is passed through the abdomen into the duodenum through the pyloric sphincter present at the lower end of the abdomen. The main function of this gland is to produce an alkaline solution contain bicarbonate ion in order to : 1.
To protect the duodenum from the acidic content of chyme 2. To provide an alkaline condition for the intestinal enzymes to be active, thus enabling absorption to take place 3. To lubricate intestinal walls.
There are also 3 juices secreted in the Duodenum: 1. Bile Juice 2. Pancreatic Juice 3. Intestinal Juice. Bile juice is secreted by the gall bladder. After being secreted by the gall bladder it travels through the bile duct that opens into the duodenum. Bile juice contains bile salt that helps to emulsify fats. Fats are broken down into small globules that are easily digested by the enzyme lipase present in the pancreatic juice.
The pancreatic juice is secreted by the pancreas. It travels through the pancreatic duct that opens into the duodenum. The enzymes present in the pancreatic juice are as follows:. The walls of the ilium are made up of fingerlike projections known as villi. Villi are made of up microvilli. Therefore, ilium has a very large surface area. The main function here is to absorb Vitamin B12, bile salts, and the products of digestion.
Cells lining the ilium also secrete protease and carbohydrase enzymes responsible for the final stages of protein and carbohydrate digestions. The villi contain large numbers of capillaries which take the amino acids and glucose produced by digestion to the liver through the hepatic portal vein.
Lacteals are small lymph vessels that are present in villi. They absorb fatty acids and glycerol, the products of fat digestion. The lacteals transport the fatty acids and glycerol to the lymphatic system for filtering. The fatty acids and glycerol are combined with the blood as lymph joins blood at the right and left subclavian veins.
The large intestine is mainly responsible for storing waste, reclaiming water, maintaining the water balance, and absorbing some vitamins, such as vitamin K. What organs are affected by diverticulitis? What are the names of the tissue layers of the stomach? What are dimensions of the small intestine? What are reasons to explain why the small intestine Where does the process of digestion begin?
Are nutrients absorbed from the large intestine? How do nutrients, absorbed by the small intestine, travel to the individual cells of the human body? Is the pH of the small intestine lower or higher than that of the stomach?
Why is the pH of the Why is the stomach such a muscular organ? How is the stomach lining adapted to its function? Li, T. Zhang, S. Wang and L. Copeland, RSC Adv. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.
To request permission to reproduce material from this article in a commercial publication , please go to the Copyright Clearance Center request page. If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given. If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given.
Read more about how to correctly acknowledge RSC content. Fetching data from CrossRef. This may take some time to load. Loading related content.
Jump to main content. Jump to site search. You do not have JavaScript enabled.
0コメント