The small intestine receives secretions from both the liver and the pancreas. What specific problem does each…

Question

The small intestine receives secretions from both the liver and the pancreas. What specific problem does each of these secretions solve for the digestion process occurring in the small intestine?

Accepted Answer

## Model Answer **Liver (Bile juice):** The food coming from the stomach is acidic. Bile juice from the liver makes it alkaline so that pancreatic enzymes can function. It also breaks down large fat globules into smaller ones (emulsification) through bile salts, increasing the efficiency of fat-digesting enzymes. **Pancreas (Pancreatic juice):** The pancreas secretes pancreatic juice containing enzymes — **trypsin** for digesting proteins and **lipase** for breaking down emulsified fats — enabling complete digestion of these nutrients in the small intestine. Source: Life Processes, Section 5.2.4 --- ## Explanation - The question has **two parts** (liver + pancreas), so address both clearly. - Key points examiners look for: (1) bile making the medium alkaline, (2) bile's emulsification of fats, (3) pancreatic enzymes (trypsin/lipase) and what they digest. Name the enzymes for full marks. - Do not mix up which organ does what — bile does NOT contain digestive enzymes for proteins; that…

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