11. How does a H2 blocker prevent gastric secretion of HCI? a. It blocks the pri

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 HCI

Explanation / 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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