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Digestive System Ryan Sovick, Period 3 - Coggle Diagram
Digestive System Ryan Sovick, Period 3
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Digestive enzymes
Amylase
An enzyme, found chiefly in saliva and pancreatic fluid, that converts starch and glycogen into simple sugars.
Pepsin
The chief digestive enzyme in the stomach, which breaks down proteins into polypeptides.
Trypsin
Trypsin is an enzyme that helps us digest protein. In the small intestine, trypsin breaks down proteins, continuing the process of digestion that began in the stomach. It may also be referred to as a proteolytic enzyme, or proteinase. Trypsin is produced by the pancreas in an inactive form called trypsinogen.
lipase
A pancreatic enzyme that catalyzes the breakdown of fats to fatty acids and glycerol or other alcohols.
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Layers of the GI tract
Mucosa
The mucosa is the innermost layer, and functions in absorption and secretion
Muscularis Mucosa
The muscularis mucosa is a thin layer of smooth muscle that supports the mucosa and provides it with the ability to move and fold.
Submucosa
The submucosa is a thick connective tissue layer that contains arteries, veins, lymphatics, and nerves.
Serosa
Serous membranes line and enclose several body cavities, known as serous cavities, where they secrete a lubricating fluid to reduce friction from muscle movements.
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