BIOL 2P97 Lecture 3: p10
28 May 2016
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The cells that will actually do this are divided into 2 categories (1) duct cells (secrete bicarbonate: lining the lumen of a duct that is slowly making its way through the pancreas to the ampulla. The valve that allows discharge of pancreatic fluid. These duct cells will secrete sodium bicarbonate. Nahco3: neutralize incoming acidic chyme (2) acinar cells (produce various types of enzymes, serve in the chemical breakdown of any type of nutrient. Functionally divided into exocrine and endocrine structures: exocrine. Enzymes include amylase, lipase, colipase, trypsin, chymotrypsin and carboxypeptidase. Enzymes typically produced as zymogens (inactive: looking at these particular exocrine enzymes, they have a number of categories address the 3 main areas of nutrient intake (sugars, fats, carbs, sugars pancreatic amylase. The salivary amylase would have been inactivated in the stomach due to ph as well as the pepsin. Need fresh amylase in the intestinal tract to continue to breakdown any type of sugar.
