Answer :
Final answer:
Saliva helps in carbohydrate breakdown and food lubrication. Gastric Juice aids in protein breakdown and bactericidal action. Pancreatic juice aids in the digestion of proteins, fats and carbohydrates while neutralizing stomach acid. Bile aids in the digestion and absorption of lipids.
Explanation:
The functions of the given digestive juices vary:
- Saliva: This is secreted in the mouth and contains an enzyme called lysozyme. It helps in the initial breakdown of food, particularly carbohydrates. Saliva also contains mucus which lubricates the food for easy swallowing.
- Gastric Juice: Secreted in the stomach, it contains digestive components like pepsin for protein breakdown, and hydrochloric acid for killing bacteria and providing the acidic environment needed for pepsin to work.
- Pancreatic Juice: Produced by the pancreas, it contains a variety of enzymes required for the digestion of proteins, fats, and carbohydrates. Pancreatic juice also contains bicarbonate to neutralize the acidic chyme coming from the stomach.
- Bile Juice: Produced by the liver and stored in the gallbladder, bile juice assists in the emulsification of lipids, aiding their digestion and absorption by making fat droplets smaller and easier to digest.
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