SIDigAbs — KinFAST

Adaptive test — questions are selected based on your ability estimate. — Tag: StomachVsSICompare

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A gastroenterology student compares digestion in the stomach with digestion in the small intestine. Which combination of statements best contrasts these two regions?

Both regions are equally important for nutrient absorption; the stomach absorbs roughly half of all nutrients Stomach digestion operates at a near-neutral pH using mainly trypsin and amylase; small intestinal digestion operates at very low pH using mainly pepsin and lipase The stomach performs mechanical churning, acidic chemical digestion (HCl denatures proteins, pepsin begins protein digestion), and minimal absorption; the small intestine receives chyme, is neutralized by pancreatic bicarbonate, and performs the majority of chemical digestion (pancreatic enzymes plus brush border enzymes) and roughly 90% of absorption Stomach digestion is primarily mechanical with no chemical digestion; small intestinal digestion is entirely chemical with no mixing

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