14. The intestinal phase of digestion a. Slows gastric emptying to ensure that i

Question

14. The intestinal phase of digestion a. Slows gastric emptying to ensure that ingested nutrients are digested and absorbed in the small intestines b. Stimulates the proliferation of "good bacteria" in the large intestine C. Maintains homeostasis of blood pH d. Stimulates gastric motility and prevents gastroesophageal reflux 15. Which monosaccharide uses secondary active co-transport with sodium (a SGLT 1) for absorption across the apical membrane of the Small Intestine? a. Lactose b. Sucrose C. Glucose d. Fructose 16. Which of the following occurs during the swallow reflex? a. The glottis constricts to prevent food from entering into the larynx. b. The lower esophageal sphincter closes to prevent gastric reflux. c. The larynx elevates, causing the epiglottis to close over the glottis, preventing aspiration 17. Which of the following plays a role in the transport of single amino acids across the apical and basolateral membranes of the small intestinal mucosa cells? a. The low concentration of intracellular Na+ in intestinal mucosa cells b. Proton pumps c. Calcium ATPase pumps 18. Enterokinase is A brush border enzyme that activates ALL pancreatic enzymes b. a. A brush border enzyme that initiates the activation of pancreatic peptidases by converting trypsinogen to active trypsin c. An duodenal enzyme that phosphorylates and activates brush border enzymes 19. Which of the following is secreted from the pancreas into the duodenum? a. Inactive pancreatic peptidases b. Bile c. Trypsirn d. Enterokinase 20. Which of the following is TRUE? a. Brush border enzymes are secreted into the lumen of the small intestines b. Brush border enzymes are found in the precursor form and must be activated. c. Brush border enzymes continue and complete the digestion of proteins, and carbohydrates

Explanation / Answer

Ans.14.

The choice is (a).

In the intestinal phase of digestion chyme enters duodenum and stimulates enteric nervous system to control gastric motility and secretion.

Ans.15.

The choice is (c).

Sodium glucose linked transport (SGLT) are sodium dependent glucose transporter. They are glucose transporter found in small intestine.

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