As soon we take one look at food, our salivary glands are at work to produce saliva mixed with enzymes to start breaking down carbohydrates. Our teeth play a major role in mechanical digestion to form a paste out of the food we are chewing, making it easier for us to swallow the food bolus down our esophagus. Due to peristalsis, the food bolus keeps moving down to the stomach, where gastric acid kills any bacteria or germs and the food is churned to make it more liquid. The food passes down to the duodenum. Pancreatic enzymes further break down carbohydrates, proteins and fats. The fat gets emulsified by the bile from the gall bladder to help in digestion. The smaller molecules move down to the small ileum and get absorbed by the blood vessels and sent to the liver to get sorted. Water is absorbed by the colon and the undigested food is egested through large intestine.
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