What is the name of the first approximately ten inches of the small intestine?

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Multiple Choice

What is the name of the first approximately ten inches of the small intestine?

Explanation:
The first portion of the small intestine is the duodenum. It runs about ten inches (roughly 25–28 cm) from the stomach and is the place where chyme mixes with bile and pancreatic secretions, neutralizing acid and kicking off digestion. That makes this segment the correct name for the described first section. The next part, the jejunum, is where most nutrient absorption happens, and the ileum continues absorption and bile acid recycling. The cecum is actually part of the large intestine, not the small intestine.

The first portion of the small intestine is the duodenum. It runs about ten inches (roughly 25–28 cm) from the stomach and is the place where chyme mixes with bile and pancreatic secretions, neutralizing acid and kicking off digestion. That makes this segment the correct name for the described first section. The next part, the jejunum, is where most nutrient absorption happens, and the ileum continues absorption and bile acid recycling. The cecum is actually part of the large intestine, not the small intestine.

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