Title: what are the three parts of small intestine and their function - Science - Life Processes - 2290069 | Meritnation.com
Headings: what are the three parts of small intestine and their function
what are the three parts of small intestine and their function
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Content: the duodenum, the jejunum and the ileum. The duodenum is the first portion of the small intestine, and it receives the contents of the stomach. When the contents of the stomach are pushed into the small intestine, they are very acidic, so this part of the small intestine is tolerant to low pHs. Soon after entering the small intestine, the pancreatic duct pours pancreatic enzymes into the digesting food. These enzymes reduce the acidity of the digesting food before it reaches parts of the small intestine that are not as tolerant to low pH. The bile duct, which carries bile from the liver, also empties into the duodenum and is responsible for breaking down fats within the food. The duodenum is the shortest part of the small intestine, measuring less than 10 inches long, and continues the digestive process that the stomach has started. The jejunum is where the majority of the absorption of nutrients takes place. The ileum is the longest part of the small intestine and is responsible for the absorption of B12 and the final processing of carbohydrates and proteins. The end of the ileum is where the small and large intestine meet and it's also where the appendix is located. Was this answer helpful?