Which of the following is NOT an effect of the hormone secreted by the duodenum?

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Stimulates abundant pancreatic secretions high in bicarbonate and low in enzymesEnhances the movement and activity of the stomachTriggers contraction of the gallbladder and relaxation of the sphincter of OddiPromotes a small volume of pancreatic juice that is enzyme-richNone of the above

Explanation

The hormone released by the duodenum stimulates the pancreas to produce a large amount of bicarbonate-rich, enzyme-poor juice, causes the gallbladder to contract, and relaxes the sphincter of Oddi. However, it does not increase gastric motility; in fact, it generally slows stomach activity to aid digestion.