Process Essay Digestion

Process Essay Digestion-6
This small ball is called a bolus, which is then swallowed.The pharynx helps in the movement of the bolus into the oesophagus, from where it moves to the stomach through the peristaltic movements of the oesophagus.The other enzyme, lysozyme is an antibacterial agent that prevents infections.

This small ball is called a bolus, which is then swallowed.

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While the bolus is in the stomach, it is mixed with highly acidic stomach secretions to form chime.Chewing breaks down food into smaller pieces and also breaks apart fiber that traps nutrients. During swallowing, the air passages are blocked so food goes to the stomach and not the lungs.After the food is chewed it is formed into a ball of chewed food mixed with saliva called a bolus which is ready to be swallowed. Swallowed food then travels down the esophagus toward the stomach.There is also a chemical breakdown of carbohydrates, due to the action of saliva from the salivary glands.30% of the starch is hydrolyzed by the action of amylase, which is a salivary enzyme.Materials that have not been absorbed in the small intestine, then enter the large intestine.The large intestine is about 5 feet long and include the colon and rectum.During this process, proteins are converted into amino acids, carbohydrates are converted into simple sugars and fats are broken down into fatty acids and glycerol.Many digestive enzymes and hormones act on food, at various stages during the process of digestion. Digestion includes a complex combination of mechanical and chemical processes.This mass of food that is semi-digested, acidic and pulpy is called the chyme.It is mostly the proteins that get digested in the stomach.


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