Four Phases Of The Digestive System

To many people I am bread, mayonnaise, and breaded chicken. However to the digestive system I am carbohydrates, fat, and protein. When I am consumed, most of me is distributed in your body. However, what s not useful is expelled. The digestive system is meant to ingest food through your mouth, digest it is by breaking it down, ingest it to your bloodstream, and lastly excrete it through the anus. In this essay I will guide you through these four phases. Bread is made out of carbohydrates. In the digestive system, carbohydrates start the digestive process in the mouth. Salivary amylase is created by by three large salivary glands. This amylase breaks down starch and carbohydrates. However, since only a few people keep the food in their mouth long enough for the amylase to digest the carbohydrates completely, it continues down to the stomach through the esophagus. A lot of people may think that the salivary amylase continues working on the carbohydrate. However since the stomach's acidity is very high the salivary enzyme is inactivated. Carbohydrates do not resume their digestion until it reaches the duodenum and pancreatic amylase continues the digestive process. After being digested, the carbohydrates
When I first enter the mouth, mechanical digestion is used to chew me. My first step of chemical digestion starts in the stomach. When I reach the stomach, pepsin is released. Like carbohydrates, stated earlier, the stomach acidity level is high. However, pepsin in most active in acidic places. Additionally, parietal cells release hydrochloric acid to increase the stomach's acidity level. Also, when pepsin starts reacting on me my bonds break. My smaller bonds move to the small intestine where pancreatic enzymes break my amino acids. To continue, trypsin and chymotrypsin are released from the pancreas and duodenum to make the small chains of amino acids singular amino acids. Lastly, the villi absorbs the amino acids into the