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Pepsin is expressed as a zymogen called pepsinogen, whose primary structure has an additional 44 amino acids compared to the active enzyme. In the stomach, gastric chief cells release pepsinogen. This zymogen is activated by hydrochloric acid (HCl), which is released from parietal cells in the stomach lining.
The enzyme is first made in the inactive form, pepsinogen by chief cells in the lining of the stomach. [24] With an impulse from the vagus nerve, pepsinogen is secreted into the stomach, where it mixes with hydrochloric acid to form pepsin. [25] Once active, pepsin works to break down proteins in foods such as dairy, meat, and eggs. [24]
Digestion is the breakdown of large insoluble food compounds into small water-soluble components so that they can be absorbed into the blood plasma.In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream.
The contents of the stomach are completely emptied into the duodenum within two to four hours after the meal is eaten. Different types of food take different amounts of time to process. Foods heavy in carbohydrates empty fastest, followed by high-protein foods. Meals with a high triglyceride content remain in the stomach the longest.
A prominent lexical feature of food blogs is special purpose vocabulary, or as Crystal in The Cambridge Encyclopedia of the English Language [11] terms “occupational variety”, indicated by “the frequent and central use of special vocabulary and jargon.” The corpus of food blogs include terms from various categories.
It is generally a glandular part of the stomach that may store and/or commence digestion of food before it progresses to the gizzard. [3] The primary function of the proventriculus is to secrete hydrochloric acid (HCl) and pepsinogen into the digestive compartments that will churn the ingested material through muscular mechanisms. [4]
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An English writing style is a combination of features in an English language composition that has become characteristic of a particular writer, a genre, a particular organization, or a profession more broadly (e.g., legal writing).
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