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Questions and Answers
What is the function of the enzymes released by the pancreas in the small intestine?
What is the function of the enzymes released by the pancreas in the small intestine?
How is trypsin formed in the small intestine?
How is trypsin formed in the small intestine?
Which process occurs in the rectum?
Which process occurs in the rectum?
Which enzyme is responsible for breaking smaller protein chains into individual amino acids?
Which enzyme is responsible for breaking smaller protein chains into individual amino acids?
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What triggers the conversion of prosecretin to secretin in the small intestine?
What triggers the conversion of prosecretin to secretin in the small intestine?
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Where do bile and pancreatic enzymes enter the digestive system?
Where do bile and pancreatic enzymes enter the digestive system?
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Study Notes
The Small Intestine
- The small intestine has an opening from the bile duct and pancreatic duct, allowing bile and pancreatic enzymes to enter.
Digestion in the Small Intestine
- Chyme, a semi-solid mixture of food, enters the small intestine and is acidic due to HCl from the stomach.
- The presence of chyme triggers the conversion of prosecretin to secretin, which is absorbed into the bloodstream and carried to the pancreas.
- Secretin is necessary to neutralize the acidic chyme.
Large Intestine
- The large intestine is approximately 5 feet long.
- It accepts the remaining nutrients not absorbed by the small intestine.
- The rectum provides short-term storage for feces before it is expelled.
Anus
- The anus is the external opening of the rectum.
- Sphincter muscles control the closure of the anus.
- Feces are expelled from the body through the anus during defecation.
Pancreas and Carbohydrate Digestion
- Amylase enzymes from the pancreas break down large carbohydrate chains into disaccharides.
- Disaccharide enzymes from the small intestine then break down disaccharides into individual sugars.
Pancreas and Protein Digestion
- Trypsinogen, a protein-digesting enzyme, is released into the small intestine and converted into trypsin.
- Trypsin breaks down large protein chains into smaller chains.
- Erepsins from the pancreas then break down smaller chains into individual amino acids.
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Description
This quiz covers the process of digestion in the small intestine, including the neutralization of acidic chyme and the role of secretin and prosecretin.
