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The absorptive surface of the small intestine is increased by the presence of: microvilli gastric pills goblet cells sphincters Chewing is an important digestive function because it improves the functionality of: a. enzymes b. hormones c. mucus d. peristalsis Which of the following releases bile into the GI tract? gallbladder pituitary gland salivary glands None of the above When the gastroesophageal sphincter contracts, food A. flows from the esophagus into the stomach. B. is prevented from reentering the esophagus from the stomach. C. leaves the stomach and enters the small intestine. D. is eliminated from the body through the anus. Pancreas secretions contain digestive enzymes and: bicarbonate cholecystokin (CCK) bile chyme
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