Question

Food being digested in the stomach is in a highly acidic environment. When the food is released from the stomach into the small intestine, why is the environment no longer acidic?
A. Secretin increases the flow of bicarbonate ions from the pancreas into the small intestine to neutralize the stomach acid.
B. Trypsinogen is activated, thus neutralizing the stomach acid.
C. Bile salts from the gallbladder neutralize the stomach acid.
D. When pepsinogen activates pepsin, one result is the neutralization of stomach acid in the stomach.

Answer 1

Secretin increases the flow of bicarbonate ions from the pancreas into the small intestine to neutralize stomach acid.

Gastric acid regulation, pancreatic bicarbonate modulation, and osmoregulation are the three primary roles of secretin. Pancreatic fluid stimulation and bicarbonate secretion are two of secretin's main physiological effects.

Peptide hormones released by endocrine cells in the digestive system include secretin and CCK. While CCK enhances the synthesis and secretion of bile juice and pancreatic enzymes, Secretin stimulates the release of water and bicarbonate ions from the pancreas.

A pancreatic fluid that is high in bicarbonate is secreted when secretin is present. By interacting with pancreatic ductal cells, secretin enters the bloodstream or intestinal lumen and increases the production of bicarbonate, which lowers the pH of the gastric chyme as it enters the small intestine.

To learn more about the small intestine refer to:

brainly.com/question/1751875

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