Food being digested in the stomach is in a highly acidic environment. The pH of the small intestine is higher than that of the stomach. Which statement best explains why this occurs? Secretin increases the flow of bicarbonate ions from the pancreas into the small intestine to neutralize the stomach acid. When pepsinogen activates pepsin, one result is the neutralization of stomach acid in the stomach. Trypsinogen is activated, thus neutralizing the stomach acid. Bile salts from the gallbladder neutralize the stomach acid.
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Madhur L.
Select the correct statement about digestive processes. Pepsin is a enzyme produced by the stomach for the purpose of starch digestion. All commonly ingested substances are significantly absorbed by the mucosa of the stomach. Chyme entering the duodenum has its pH buffered by pancreatic enzymes. The ascending salivary gland is active in the large intestine.
The digestive enzymes of the small intestine a. do not function well at a low pH. b. are produced and released in response to circulating secretin. c. are produced and released under neural control. d. are all secreted by the pancreas. e. are all activated by an acidic environment.
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