What is the function of the bile juice secreted by the liver in human digestion?
Answer and explanation
Correct answer: A. Emulsifying large fat globules and providing an alkaline medium for pancreatic enzymes
- Step 1: Bile juice contains no digestive enzymes but contains bile salts.
- Step 2: Bile salts emulsify large dietary lipid droplets into microscopic micelles, increasing surface area for pancreatic lipase.
- Step 3: Bile is alkaline, neutralizing acidic gastric chyme to create optimum pH for pancreatic enzymes.
Answer
Emulsifying large fat globules and providing an alkaline medium for pancreatic enzymes.
Why not the others: Salivary and pancreatic amylase digest starch; hydrochloric acid activates pepsinogen; and trypsin/pepsin digest proteins.
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