- Draw a diagram of human alimentary canal and label on it: Oesophagus, Gallbladder, Liver and Pancreas.
- Explain the statement, ‘Bile does not contain any enzyme but it is essential for digestion.’
CBSE DELHI - SET 1 2009
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- Bile is a digestive juice secreted by the liver. Although it does not contain any digestive enzymes, it plays an important role in the digestion of fats. Bile juice has bile pigments such as bilirubin and biliverdin. These break down large fat globules into smaller globules so that the pancreatic enzymes can easily act on them. This process is known as emulsification of fats. Bile juice also makes the medium alkaline deu to presense of $NaHCO _3$ and also activate lipase.
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