Regions that break down foodstuffs mechanically?

2 ANSWERS

1. Harry
   

    Before the food you eat can be used, it must be broken down into pieces that are smaller than cells. The process of breaking food down is called digestion. The regions where the foodstuffs break down mechanically happen to be Oral cavity and stomach. When you are done chewing, your tongue pushes the food down into the opening of your esophagus, which is the second part of the digestive system process. Food enters the mouth, being chewed by teeth, with chemical processing beginning with chemicals in the saliva from the salivary glands. Then it travels down the esophagus into the stomach, where hydrochloric acid kills most contaminating microorganisms and begins mechanical breakdown of some food (e.g., denaturation of protein), and chemical alteration of some. Once the food has entered your esophagus, the muscles in the walls of the esophagus move in wavelike contractions - called peristalsis - to move the food through the esophagus, and into the stomach. Your stomach is attached to the end of the esophagus, and has three jobs: store the food that has been eaten, break down the food into a liquid, and to slowly empty the liquid into the small intestine. To keep the stomach from digesting itself, it is lined with a thin membrane called mucousa, and that secretes a protective, slimy covering of mucus. The muscles of the stomach mix all the food together with gastric juices, which help to kill any bacteria that might have been in the food. This thick liquid/paste is called chyme. 

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2. Guest10475596
   

   regions that break down foodstuffs mechanically?

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