The Digestive System: Upper Gastrointestinal Tract
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Pepsin
a digestive enzyme present in gastric juice that breaks down proteins into peptides
Amalase
a digestive enzyme that breaks down starch and carbs
Pyloric sphincter
The muscular valve at the bottom of the stomach that controls flow of digested food from stomach to small intestine
Hydrochloric Acid
a strong stomach acid produced by the epithelial cells in the stomach; necessary for digestion of food
Zymogen
an inactive precursor that is requires change to be activated
When does maximum secretion of hydrochloric acid and pepsinogen in the stomach occur?
between meals, the stomach is empty and pretty much inactive. When food enters the stomach, it sets off a full response with the secretion of hydrochloric acid and pepsinogen.
