SMALL INTESTINE

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SMALL INTESTINE

• Spaghetti time!

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SMALL INTESTINE

• Roughly 20 feet
• Small in diameter
• Champion digester
• Absorbs

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SMALL INTESTINE

• Has 3 main parts.
• 1. Duodenum
• 2. Jejunum
• 3. Ileum

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Duodenum

• Section 1

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Duodenum

• First 10-12 inches after the stomach.
• (Duodenal ulcers)

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Duodenum

• Chyme- STUFF released from the stomach by the
  pyloric sphincter.
• ACIDIC!!

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Duodenum

• Bile
• Comes from the liver to neutralize acid.
• Emulsifies fat
• Adds color to feces.

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Duodenum

• Pancreatic Juice
• Comes from pancreas
• Neutralizes acid
• Releases 3 BIG enzymes

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Duodenum

• Amylase
• Starch ? maltose

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Duodenum

• Trypsin
• Proteins ? peptides

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Duodenum

• Lipase
• Lipids ? Fatty acids
• Glycerols

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Jejunum

• Section 2

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Jejunum

• About 8 feet long
• BULK of nutrient absorption

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Jejunum

• Intestinal juice prepares food to be absorbed.

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Jejunum

• Further breakdown
• Peptidase
• Peptides ? amino acids

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Jejunum

• Maltase
• Maltose ? Glucose

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Ileum

• About 12 feet long
• Connects to large intestine

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Color code

• Color code the Villi
• I,K,L,M

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