11. How does a H2 blocker prevent gastric secretion of HCI? a. It blocks the pri
ID: 3520099 • Letter: 1
Question
11. How does a H2 blocker prevent gastric secretion of HCI? a. It blocks the primary active transport of Hydrogen from parietal cells b. It prevents Histamine from binding to H2 receptors on parietal cells c. It blocks Histamine secretion from enterochromaffin like cells 12. Which of the following is NOT a function of pancreatic bicarbonate? a. It buffers gastric acid entering into the intestines b. It provides an alkaline pH for the intestinal and pancreatic enzymes c. It stimulates the secretion of pancreatic enzymes 13. Fat digestion would occur fastest in which of the following test tube. (the tubes indicate the ORIGINAL contents) a. Test tube 1: Originally contained vegetable oil, lipase and HCO3 (bicarbonate) b. Test tube 2: Originally contained vegetable oil, lipase, bile and HCO3 (bicarbonate) c. Test tube 3: Originally contained vegetable oil, lipase, bile and HCIExplanation / Answer
Question 11
Answer B
it prevents histamine from binding to H2 receptors on parietal cells
Question 12
Answer C (It stimulate the secretion of pancreatic enzymes)
Bicarbonates are mainly responsible for it buffers gastric acid entering into the intestine, and it provides an alkaline pH for the intestinal and pancreatic enzymes.
Question 13
Answer B Test tube 2: (Originally contained vegetable oil, lipase, bile, and bicarbonates)
the fat metabolism mainly occurs through the presence of bile.
The presence of HCL causes the killing of lipase enzyme so the fastest digestion occurs through option B.
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