第六章单元测试
- The activator of pepsinogen is （ ）
- Most of nutrients are absorbed in（ ）
- Which is wrong in the following descriptions about the effects of hydrochloric acid? （ ）
- The substance that is involved in the absorption of vitamin B12 is ___.（ ）
- The mechanism by which the acidity chyme in the small intestine promotes the secretion of pancreatic juice is ___.（ ）
- Most digestion occurs in（ ）
- Which of these statements about gastric secretion of HCl is false? （ ）
- Original site of slow wave (basic electrical rhythm, BER) of the gut smooth muscle is （ ）
- The order from fast to slow of gastric emptying rate in stomach is （ ）
- The most active of pepsin is under the pH value （ ）
A:K+ B:HCl C:Na+ D:gastrin E:intrinsic factor
答案:HCl
A:the duodenum B:the small intestine C:the esophagus and the stomach D:the large intestine E:the stomach
A:killing many swallowed bacteria B:promoting the absorption of vitamin B12 C:activating the pepsinogen D:promoting the secretion of pancreatic juice E:promoting the absorption of calcium and ferrum
A:HCl B:pepsin C:Cl- D:intrinsic factor E:Na+
A:the release of the secretin by mucous membrane of the small intestine B:the release of the gastrin by mucous membrane of the small intestine C:the excitation of sympathetic nerve D:the release of the cholecystokinin by mucous membrane of the small intestine E:the excitation of the vagus nerve
A:the small intestine B:the large intestine C:the stomach D:the esophagus E:the mouth
A:HCl hydrolyzes peptide bonds B:HCl is secreted by parietal cells C:HCl is needed for the conversion of pepsinogen to pepsin D:HCl is needed for maximum activity of pepsin E:HCl can kill bacteria
A:Cajal cell B:S cell C:I cell D:G cell
A:sugar＞fat＞protein B:protein＞fat＞sugar C:sugar＞protein＞fat D:protein＞sugar＞fat E:fat＞sugar＞protein
A:pH 0.9～1.5 B:pH 2～3 C:pH 2～3.5 D:pH 1.8～3.5 E:pH 2～2.5
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