24. Which of the following enzymes is required to digest some polysacch a amylas

Question

24. Which of the following enzymes is required to digest some polysacch a amylase b. lipase e. lactase d. trypsin e. pepsin 25. Which of the following cells secretes hydrochloric acid? a. mucous cells b. acinar cells c. parietal cells d. chief cells e. enteroendocrine cells 26. In addition to the storage of food, the stomach a. denatures proteins b. absorbs alcohol c mechanically digests food particles d. secretes mucous e. all of the above 27. Which of the following enzymes helps digest proteins? a. pepsin b. carboxypeptidase c. trypsin d. dipeptidase e. all of the above 28. The functions of the oral cavity include all of the following, except a. digestion of starch b. mechanical processing of food. c. lubrication of food d. sensory analysis of food e. absorption of monosaccharides 29. The regulates the passage of chyme from the small intestine into the large intestine. a. hepatopancreatic sphincter b. vermiform appendix c. common bile duct d. ileocecal valve e. cardiac sphincter

Explanation / Answer

24)  a. Amylase

Amylase refers to a group of enzymes whose catalytic function is to hydrolyze (breakdown) sugar and starch. Amylase digests carbohydrates (polysaccharides) into smaller disaccharide units, eventually converting them into monosaccharides such as glucose.

25)  c. Parietal cells

Parietal cells (also known as oxyntic or delomorphous cells), are the epithelial cells that secrete hydrochloric acid (HCl) and intrinsic factor. These cells are located in the gastric glands found in the lining of the fundus and in the cardia of the stomach.

26)  a. denatures proteins

27) e. All of the above

Proteins are digested by different enzymes acting in the following sequence pepsin, trypsin, carboxypeptidase, dipeptidase.

28) e. absorption of monosaccharides.

29) a. hepatopancreatic sphincter

Sphincter of Oddi a sheath of muscle fibers investing the associated bile and pancreatic passages as they traverse the wall of the duodenum. pyloric sphincter asphincter at the opening from the stomach into the duodenum; it is usually closed, opening only for a moment when a peristaltic wave passes over it.

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