Topic 5 Digestive System: Pancreas

Question 1

• Secretes bicarbonate and acts as an exocrine gland releasing major enzymes from acinar cells via pancreatic duct -> duodenum

Answer 1

Note

Question 2

• Trypsin, chymotrypsin, lipase, pancreatic amylase, and deoxy/ribonucleases

Answer 2

1. Enzymes

Question 3

• Zymogens/proenzymes (inactive); trypsin gets activated by enterokinases (produced by cells of the duodenum) located in the brush border, then activated trypsin activates the other enzymes

Answer 3

2. These enzymes exist as

Question 4

• Enzymes are then secreted into the pancreatic juice, an alkaline solution due to the bicarbonate secreted by the pancreas

Answer 4

What happens next

Question 5

• Enzymes flow from pancreatic duct -> duodenum and the alkaline fluid helps neutralize the acidic chyme in the stomach, providing a better environment to activate pancreatic enzymes

Answer 5

Then next