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The duodenum also regulates the rate of emptying of the stomach via hormonal pathways. Secretin and cholecystokinin are released from cells in the duodenal epithelium in response to acidic and fatty stimuli present there when the pylorus opens and releases gastric chyme into the duodenum for further digestion. These cause the liver and gall bladder to release bile, and the pancreas to release bicarbonate and digestive enzymes such as trypsin, lipase and amylase into the duodenum as they are needed.

The bicarbonate released by the pancreas is to neutralize the hydrochloric acid coming from the stomach.

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Q: How is the duodenum protected from stomach acids?
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What is the clinical significance of the sudden shift on pH from the stomach to the small intestines?

The stomach is covered in mucus to protect it from the strong acids used to digest proteins. The duodenum (the very first section of the small intestine) does not have such mucus to protect itself. The pH change is crucial to make sure that the duodenum is not harmed by the strong acids from the stomach.


Are the volumes of the stomach and duodenum equal?

The duodenum is small compared to the stomach.


What is the name of the first portion of the small bowel that connects to the stomach?

The Pylorus (the valve between the stomach and duodenum is the pyloric valve)


Is the volumes of the stomach and duodenum the same?

No. The duodenum is part of the small intestine and connects the small intestine to the stomach.


What is the name of the portion of the stomach closest to the small intestine?

The duodenum


Does protein digestion occur in the duodenum or ileum?

It occurs first in the stomach and then in the duodenum.


What system in human is the duodenum?

The duodenum is the juncture between the stomach and the small intestine.


Which term is not associated with the stomach?

duodenum


When Chyme moves from the stomach into the?

Duodenum


What is pyloric pump of the stomach?

The pyloric pump of the stomach empties what's inside the stomach into the duodenum. The pump is activated when the stomach distends. The pump is inhibited when there's acid inside the duodenum. The pump is also inhibited if there are substances difficult tot digest inside the duodenum.


What does the term duodenum means?

The duodenum is the first section of the small intestine. The duodenum connects the stomach with the jejunum where digestion continues.


How are the glycerol and fatty acids absorbed in duodenum?

Glycerol and fatty acids are absorbed in the duodenum through the process of diffusion after digestion. Glycerol and fatty acids circulate into lymphatic vessels and do not circulate into the bloodstream.