CHAPTER 6 DIGESTION AND ABSORPTION 选择题 A1型题 1.The pathway from the intestinal lumen to the circulating blood for a short-chain fatty acid A.intestinal mucosal cell→chylomicrons→lymphatic duct→systemic venous blood B.intestinal mucosal cell hepatic portal vein blood -systemic venous blood C.space between mucosal cells -lymphatic duct systemic venous blood D.space between mucosal cells→chylomicrons→lymphatic duct→ systemic venous blood E.intestinal mucosal cell·LDL·hepatic portal vein blood→systemic venous blood [答案]B 2. Maximum absorption of short-chain fatty acids produced by bacteria occurs in the A. stomach B.duodenum C. je junum D.ileum E.colon [答案]E
CHAPTER 6 DIGESTION AND ABSORPTION 选择题 A1 型题 1. The pathway from the intestinal lumen to the circulating blood for a short-chain fatty acid ( A. intestinal mucosal cell → chylomicrons → lymphatic duct → systemic venous blood B. intestinal mucosal cell → hepatic portal vein blood → systemic venous blood C. space between mucosal cells → lymphatic duct → systemic venous blood D. space between mucosal cells → chylomicrons → lymphatic duct → systemic venous blood E. intestinal mucosal cell → LDL → hepatic portal vein blood→ systemic venous blood [答案] B 2. Maximum absorption of short-chain fatty acids produced by bacteria occurs in the A. stomach B. duodenum C. jejunum D. ileum E. colon [答案] E
3.Water is absorbed in the je junum,ileum,and colon and excreted in the feces. Arrange these in order of the amount of water absorbed or excreted from greatest to smallest. A.Colon,jejunum,ileum,feces B.Feces,colon,ileum,jejunum C.Jejunum,ileum,colon,feces D.Colon,ileum,jejunum,feces E.Feces,jejunum,ileum,colon [答案]C 4.Drugs and toxins that increase the cAMP content of the intestinal mucosa cause diarrhea because they A.increase Na+-K+cotransport in the small intestine B.increase K+secretion into the colon C.inhibit K+absorption in the crypts of Lieberkuhn D.increase Na+absorption in the small intestine E.increase Cl-secretion into the intestinal lumen [答案]E 5.Which of the following are incorrectly paired? A.Pancreatic a-amylase:starch B.Elastase:tissues rich in elastin C.Enteropeptidase:polypeptides D.Rennin:coagulated milk E.Lingual lipase:digestion in the stomach [答案]C
3. Water is absorbed in the jejunum, ileum, and colon and excreted in the feces. Arrange these in order of the amount of water absorbed or excreted from greatest to smallest. A. Colon, jejunum, ileum, feces B. Feces, colon, ileum, jejunum C. Jejunum, ileum, colon, feces D. Colon, ileum, jejunum, feces E. Feces, jejunum, ileum, colon [答案] C 4. Drugs and toxins that increase the cAMP content of the intestinal mucosa cause diarrhea because they A. increase Na+-K+ cotransport in the small intestine B. increase K+ secretion into the colon C. inhibit K+ absorption in the crypts of Lieberkühn D. increase Na+ absorption in the small intestine E. increase Cl- secretion into the intestinal lumen [答案] E 5. Which of the following are incorrectly paired? A. Pancreatic α-amylase: starch B. Elastase: tissues rich in elastin C. Enteropeptidase: polypeptides D. Rennin: coagulated milk E. Lingual lipase: digestion in the stomach [答案] C
6.Calcium absorption is increased by A.hypercalcemia B.oxalates in the diet C.iron overload D.1,25 -dihydroxycholecalciferol E.increased Na+absorption [答案]D 7. Removal of the entire colon would be expected to cause A.death B.megaloblastic anemia C.severe malnutrition D.an increase in the blood level of ammonia in patients with cirrhosis of the liver E.decreased urinary urobilinogen [答案]D 8.In infants,defecation often follows a meal.The cause of colonic contractions in this situation is A.the gastroileal reflex B.increased circulating levels of CCK C.the gastrocolic reflex D.increased circulating levels of somatostatin E.the enterogastric reflex [答案]C
6. Calcium absorption is increased by A. hypercalcemia B. oxalates in the diet C. iron overload D. 1, 25 –dihydroxycholecalciferol E. increased Na+ absorption [答案] D 7. Removal of the entire colon would be expected to cause A. death B. megaloblastic anemia C. severe malnutrition D. an increase in the blood level of ammonia in patients with cirrhosis of the liver E. decreased urinary urobilinogen [答案] D 8. In infants, defecation often follows a meal. The cause of colonic contractions in this situation is A. the gastroileal reflex B. increased circulating levels of CCK C. the gastrocolic reflex D. increased circulating levels of somatostatin E. the enterogastric reflex [答案] C
9.After a meal rich in carbohydrates is ingested,insulin secretion is probably stimulated by A.GLP-1 (7-36)amide B.CCK C serotonin D.VIP E.gastrin [答案]A 10.The symptoms of the dumping syndrome (discomfort after meals in patients with intestinal short circuits such as anastomosis of the jejunum to the stomach) are caused in part by A.increased blood pressure B.increased secretion of glucagon C.increased secretion of CCK D.hypoglycemia E.hyperglycemia [答案]D 11. Which of the following has the highest pH? A.Gastric juice B.Bile in the gallbladder C.Pancreatic juice D.Saliva E.Secretions of the intestinal glands [答案]C
9. After a meal rich in carbohydrates is ingested, insulin secretion is probably stimulated by A. GLP-l (7-36) amide B. CCK C. serotonin D. VIP E. gastrin [答案] A 10. The symptoms of the dumping syndrome (discomfort after meals in patients with intestinal short circuits such as anastomosis of the jejunum to the stomach) are caused in part by A. increased blood pressure B. increased secretion of glucagon C. increased secretion of CCK D. hypoglycemia E. hyperglycemia [答案] D 11. Which of the following has the highest pH? A. Gastric juice B. Bile in the gallbladder C. Pancreatic juice D. Saliva E. Secretions of the intestinal glands [答案] C
12.After complete hepatectomy,a rise would be expected in the blood level of A.glucose B.fibrinogen C.25-hydroxycholecalciferol D.conjugated bilirubin E.estrogens [答案]E 13.Which of the following would not be produced by total pancreatectomy? A.Vitamin E deficiency B.Hyperglycemia C.Metabolic acidosis D.Weight gain E.Decreased absorption of amino acids [答案]D
12. After complete hepatectomy, a rise would be expected in the blood level of A. glucose B. fibrinogen C. 25-hydroxycholecalciferol D. conjugated bilirubin E. estrogens [答案] E 13. Which of the following would not be produced by total pancreatectomy? A. Vitamin E deficiency B. Hyperglycemia C. Metabolic acidosis D. Weight gain E. Decreased absorption of amino acids [答案] D